Dr. Roger A. Dixon

Contact Information:

 

Mailing Address

Department of Psychology

P-217 Biological Sciences Bldg

University of Alberta

Edmonton, AB

Canada T6G 2E9

 

Email

rdixon@ualberta.ca

Conference Presentations

 

This page lists conference presentations from the most recent decade (2020–2010).       

Many of these presentations have become published papers. For further information contact via email the VLS (vlslab@ualberta.ca).

Recent Presentations

 

-2019–2020-

 

Caballero, S., McFall, G.P., Gee, M., Nelles, K., Burt, J., Dixon, R.A., & Camicioli, R. (2020, October). Fluctuating cognition in neurodegenerative disease: Comparing reaction time mean rate and inconsistency. Poster presented at the 2020 Virtual CCNA Science Day Conference.

 

Dixon, R.A. (2020, October). Factoring sex into aging and neurodegeneration research: Examples with large data bases. Presentation in G.E. Einstein (Moderator), Integrating sex and gender in aging and neurodegeneration research: Examples from micro- to macro-data. Symposium presented at the 2020 Virtual CCNA Science Day Conference.

 

Dixon, R.A. (2020, October). New directions in biomarker research and application in Alzheimer's disease. Symposium presented at the 2020 Virtual CCNA Science Day Conference.

 

Dixon, R.A. (2020, July). Machine learning approaches for precision mining of longitudinal data. Presented at the Alzheimer's Association International Conference (Virtual Event).

 

Sapkota, S., McFall, G.P., Dixon, R.A., Masellis, M., & Black, S. (2020, July). Association of ventricular size on executive function and attention is modified by Apolipoprotein E and moderated by pulse pressure in Alzheimer's disease. Presented at the Alzheimer's Association International Conference (Virtual Event).

 

Caballero, H.S., McFall, G.P., Gee, M., Nelles, K., Burt, J., MacDonald, S.W.S., Dixon, R.A., & Camicioli, R. (2020, March). Fluctuating cognition in neurodegenerative disease: Comparing reaction time mean rate and inconsistency. Poster presented at the 21st Annual Neuroscience and Mental Health Institute Research Day, Edmonton, AB.

 

Bohn, L., Zheng, Y., McFall, G.P., & Dixon, R.A. (2019, November). Early frailty phenotypes and predictions of cognitive aging: Evidence from the Victoria Longitudinal Study. Poster presented at the Gerontological Society of America, Austin, TX.

 

Dixon, R.A. (2019, October). Can precision prevention targets be identified via data-driven analyses of asymptomatic trajectories? Keynote address, International Research Network for Dementia Prevention, Sydney, Australia.

 

Dixon, R.A., & Robillard, J.M. (2019, October). Biomarker and risk factor research in aging and neurodegenerative disease: New approaches, promising opportunities, and emerging challenges. Invited workshop, Canadian Consortium on Neurodegeneration and Aging, Québec City, QC.

 

Drouin, S., McFall, G.P., Potvin, O., Bellec, P., Duchesne, S., & Dixon, R.A. (2019, October). Machine learning analyses of longitudinal imaging trajectories: Discrimination and biomarker prediction of change subclasses and clinical outcomes. Poster presented at Canadian Consortium on Neurodegeneration and Aging, Québec City, QC.

 

Sapkota, S., McFall, G.P., Masellis, M., & Dixon, R.A. (2019, October). Modifiable AD risk score effects on cognitive trajectories are moderated by Alzheimer's genetic networks. Poster presented at Canadian Consortium on Neurodegeneration and Aging, Québec City, QC.

 

McFall, G.P., Potvin, O., Dieumegarde, L., Drouin, S., Camicioli, R., Collins, L., Bellec, P., Duchesne, S., & Dixon, R.A.
(2019, July). Trajectory analyses of morphometric imaging measures provide novel insights into the dynamics of brain aging as moderated by sex and APOE. Presented at Alzheimer's Association International Conference, Los Angeles, CA.

 

Badhwar, A., McFall, G.P., Sapkota, S., Black, S.E., Chertkow, H., Duchesne, S., Masellis, M., Li, L., Dixon, R.A., & Bellec, P. A (2019, June). A multiomics approach to heterogeneity in Alzheimer's disease: Focused review and roadmap. Presented at Organization for Human Brain Mapping, Rome, Italy.

 

Bajwa, B., Buzatto, A.Z., Dixon, R.A., Camicioli, R., Smith E.E., & Li, L. (2019, June). Lipidomics of Alzheimer's disease and cerebral amyloid angiopathy: Identification of potential biomarkers in human plasma by UHPLC-MS. Presented at American Society for Mass Spectrometry, Atlanta, GA.

 

Buzatto, A.Z., Bajwa, B., Tatlay, J., Dixon, R.A., Camicioli, R., & Li, L. (2019, June). Lipidomics of Parkinson's disease: Towards more accurate diagnosis methods through omics technologies. Presented at American Society for Mass Spectrometry, Atlanta, GA.

 

Dixon, R.A. (2019, April). Exploring how bio-signals shape trajectories of brain and cognitive aging: Implications for Alzheimer's disease risk and protection. Invited address, Beckman Institute, University of Illinois, USA.

 

Dixon, R.A. (2019, April). What can trajectories of brain and cognitive aging reveal about risk for (and protection from) Alzheimer's disease. Invited address, 33rd annual Joseph R. Royce Conference, University of Alberta, Edmonton, AB.

 

Caballero, H.S., Bohn, L., McFall, G.P., & Dixon, R.A. (2019, March). Do functional biomarkers predict differential decline in non-demented cognitive aging? Presented at the 20th Annual Neuroscience and Mental Health Institute Research Day, Edmonton, AB.

 

Dixon, R.A. (2019, March). On the hunt for bio-signals predicting trajectories toward or away from Alzheimer's disease. Keynote address, Rotman Research Institute Conference on Aging and Brain Health: Prevention and Early Detection of Dementia, Toronto, ON.

 

McFall, G.P., & Dixon, R.A. (2019, March). Biomarker research in COMPASS-ND. Presented at the CCNA Team 9B Neuroimaging Conference, Montréal, QC.

 

-2018-

 

Camicioli, R., Dixon, R.A., Tadley, J., Buzatto, A.Z., Mung, D., Bajwa, B., & Li, L. (2018, October). Lipidomics analyses in Parkinson's disease. Presented at the 2018 Canadian Consortium on Neurodegeneration and Aging Science Day, Montréal, QC.

 

Dixon, R.A., & Bellec, P. (2018, October). CCNA Biomarkers Team: Progress, prospects, and plans. Invited address at the 2018 Canadian Consortium on Neurodegeneration and Aging Science Day, Montréal, QC.

 

McFall, G.P., Olivier, P., Dieumegarde, L., Drouin, S., Camicioli, R., Duchesne, S., & Dixon, R.A. (2018, October). Longitudinal analyses of imaging trajectories provide novel insights into the variable dynamics of brain aging and Alzheimer's disease. Presented at the 2018 Canadian Consortium on Neurodegeneration and Aging Science Day, Montréal, QC.

 

Zhao, S., Zwiers, A., Sekhon, R., Charlton, A., Dixon, R.A., Smith, E.E., & Li, L. (2018, September). Blood metabolomics profiling in cerebral amyloid angiopathy, Alzheimer's disease, and controls. Paper presented at the Cerebral Amyloid Angiopathy Conference, Lille, France.

 

Dixon, R.A. (2018, July). For better and for worse: How Alzheimer's biomarkers predict a spectrum of cognitive trajectories and outcomes. Paper presented at K.J. Anstey & R.A. Dixon (organizers), Cognitive ageing: New perspectives on causes and consequences. Invited symposium, International Society for Study of Behavioural Development, Gold Coast, Australia.

 

Bohn, L., McFall, G.P., & Dixon, R.A. (2018, June). Less isn’t always better: Weight status differentially impacts semantic related cognition as a function of age and sex. Poster presented at the International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

Caballero, H.S., McFall, G.P., & Dixon, R.A. (2018, June). Integrating characteristics of executive functions in non-demented aging: Structure, trajectories, classification, and biomarker predictors. Poster presented at the International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

Drouin, S., McFall, G.P., Fu, S.X., & Dixon, R.A. (2018, June). A four-facet model of subjective memory decline in non-demented aging: Selective prediction sensitivity for women. Poster presented at the International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

McFall G.P. (2018, June). Alzheimer’s biomarkers discriminate non-demented cognitive aging trajectories and phenotypes. Invited talk, International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

Sapkota, S., McFall, G.P., Masellis, M., & Dixon, R.A. (2018, June). Alzheimer's genetic network effects on cognitive trajectories are moderated by modifiable AD risk domains. Poster presented at the International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation. Banff, AB.

 

Thibeau, S., McFall, G.P., Rockwood, K., & Dixon, R.A. (2018, June). Decoding interacting trajectories of frailty and memory aging: Patterns of change, prediction, and resilience. Poster presented at the International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

Drouin, S., McFall, G.P., Fu, S.X., & Dixon, R.A. (2018, April). A four-facet model of subjective memory decline in non-demented aging: Selective prediction sensitivity for women. Poster presented at the annual Joseph R. Royce Conference, Department of Psychology, University of Alberta, Edmonton, AB.

 

Caballero, H.S., McFall, G.P., & Dixon, R.A. (2018, March). Integrating characteristics of executive functions in non-demented aging: Structure, trajectories, classification, and biomarker predictors. Poster presented at the Neuroscience and Mental Health Institute’s Annual Neuroscience Research Day, University of Alberta, Edmonton, AB.

 

Dixon, R.A. (2018, March). The search for Alzheimer's signals prior to Alzheimer's disease. Keynote address, CAIP Research Conference, Lethbridge, AB.

 

-2017-

 

McFall, G.P., Bellec, P., Deary, I., & Dixon, R.A. (2017, November). Multiple modalities of Alzheimer’s biomarkers discriminate trajectory-based phenotypes in non-demented aging: Machine-learning prediction of sex differences in sustained cognitive health and accelerated decline. Poster presented at the Canadian Consortium on Neurodegeneration in Aging Annual Science Day, Toronto, ON.

 

Thibeau, S., McDermott, K., McFall, G.P., Weibe, S., Rockwood, K., & Dixon, R.A. (2017, November). Frailty effects on cognitive changes in aging are moderated by domain, Alzheimer’s genetic risk, and sex. Poster presented at the Canadian Consortium on Neurodegeneration in Aging Annual Science Day, Toronto, ON.

 

Badhwar, A., McFall, G.P., Sapkota, S., Duchesne, S., Li, L., Chertkow, H., Dixon, R.A., & Bellec, P. (2017, November). Toward discovery of multi-omic biotypes of Alzheimer's disease in the COMPASS-ND cohort: A focused review and proposed roadmap. Paper presented at the Canadian Consortium on Neurodegeneration in Aging Annual Science Day, Toronto, ON.

 

Dixon, R.A., McFall, G.P. & McDermott, K. (2017, July). Discriminating and predicting cognitive exceptionality and resilience: A roadmap for trajectory and interaction analyses with risk and protection factors. Invited talk at Alzheimer's Association International Conference, London, England.

 

McFall, G.P., & Dixon, R.A. (2017, July). Alzheimer’s biomarkers interact dynamically to predict cognitive trajectories differentially for cognitively exceptional, normal, and impaired groups. Poster presented at 2017 Alzheimer’s Association International Confernence, London, England.

 

Badhwar, A., McFall, G. P., Sapkota, S., Chertkow, H., Dixon, R. A., & Bellec, P. (2017, July). Toward discovery of multi-omics biotypes of Alzheimer’s disease: A focused review and proposed roadmap. Poster presented at 2017 Alzheimer’s Association International Confernence, London, England.

 

Lukyn, T.V., Hundza, S. DeCarlo, C., Dixon, R.A., & MacDonald, S.W.S. (2017, July). Spatial, temporal and variability biomarker norms derived from the GAITRite system predict mild cognitive impairment. Poster presented at the 21st IAGG World Conference of Gerontology and Geriatrics, San Francisco, CA.

 

Thibeau, S., McDermott, K., McFall, G.P., Wiebe, S., Rockwood, K., & Dixon, R.A. (2017, July). Frailty effects on cognitive changes in aging are moderated by domain, genetic risk and sex. Poster presented at the 21st IAGG World Congress of Gerontology and Geriatrics, San Francisco, CA.

 

Fu, S.X., McFall, G.P. & Dixon, R.A. (2017, March) Subjective memory decline in non-demented aging: Exploring multidimensionality, group differences, longitudinal changes. Poster presented at the annual Joseph R. Royce Conference, Department of Psychology, University of Alberta, Edmonton, AB.

 

Caballero, H.S., McFall G.P., Wiebe, S.A. & Dixon, R.A. (2017, March). Exploring performance, structure, and de/differentiation in executive functions across an 80-year band of adulthood. Poster presented at the Neuroscience and Mental Health Institute’s Annual Neuroscience Research Day, University of Alberta, Edmonton, AB.

 

-2016-

 

Dixon, R.A. (2016, November). Overview of a Canadian initiative in biomarkers of neurodegenerative disease. Invited address at Movement Disorders Symposium, Edmonton, AB.

 

McFall, G.P., & Dixon, R.A. (2016, November). Interactions of genetic risk and vascular health on cognitive aging vary by cognitive status. Gerontological Society of America, New Orleans, LA.

 

McFall, G.P., & Dixon, R.A. (2016, October). Alzheimer's biomarkers interact to predict cognitive trajectories: Differential patterns for cognitively exceptional, normal, and impaired groups. Canadian Consortium on Neurodegeneration in Aging: Science Day, Vancouver, BC.

 

Sapkota, S., Huan, T., Tran, T., Zheng, J. MacDonald, S., Camicioli, R., Li, L., & Dixon, R.A. (2016. October). Salivary metabolomics produce biomarkers predictive of neurocognitive performance in normal aging, mild cognitive impairment, and Alzheimer`s disease groups. Canadian Consortium on Neurodegeneration in Aging: Science Day, Vancouver, BC.

 

Badhwar, A., Chen, J., Dansereau, C., Devernyi, G.A., Iturria Medina, Y., Orban, P., Quirion, P-O, Beailieu, C., Chakravarty, M., Descpteaux, M., Duchesne, S., Evans, A., Dixon, R.A., & Bellec, P. (2016, October). The COMPASS-ND processed MRI project: A multimodal collection of standardized and sensitive markers to study neurodegeneration. Canadian Consortium on Neurodegeneration in Aging: Science Day, Vancouver, BC.

 

Dixon, R.A. & McFall, G.P. (2016, July). Alzheimer's-related biomarkers contribute to differential longitudinal trajectories in non-demented memory aging. In M. Naveh-Benjamin (Symposium Chair), Episodic memory and aging: Perspectives on brain and behaviour. International Conference on Memory, Budapest, Hungary.

 

McFall, G.P., Bäckman, L., & Dixon, R.A. (2016, July). A scalpel not an axe: Nuances in Apoe risk effects in non-demented cognitive aging. Alzheimer's Association International Conference, Toronto, ON.

 

McDermott, K.L., McFall, G.P., Andrews, S., Anstey, K.J., & Dixon, R.A. (2016, July). Memory resilience in carriers of Alzheimer's genetic risk: Predictors vary for female and male older adults. Alzheimer's Association International Conference, Toronto, ON.

 

Sapkota, S., & Dixon, R.A. (2016, July). A network of genetic effects on non-demented cognitive aging: Alzheimer's genetic risk (CLU + CR1 + PICALM) intensifies cognitive aging genetic risk (COMT + BDNF) selectively for APOE e4+ carriers. Alzheimer's Association International Conference, Toronto, ON.

 

Brown, C., Robataille, A., Dixon, R.A. Hofer, S., & Piccinin, A. (2016, May). Cognitive activity mediates the association between social activity and cognitive performance: A longitudinal study. International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

Dixon, R.A. (2016, May). Modifiers of trajectories and outcomes in brain and cognitive aging. Invited address at International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

DeCarlo, C.A., MacDonald, S.W.S., McFall, G.P., & Dixon, R.A. (2016, May). Linking mechanism-based biomarkers and non-demented cognitive aging: Findings from the Victoria Longitudinal Study. International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

Lukyn, T.V., Hundza, S.R., Mulligan, G., Dixon, R.A. & MacDonald, S.W.S. (2016, May). Development and potential clinical application of normative temporospatial movement data in non-demented older adults: Biomarkers from the GAITRite system. International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

MacDonald, S.W.S., Hundza, S.R., Brewster, P.W.H., Halliday, D.W.R., Lukyn, T.V., DeCarlo, C.A., & Dixon, R.A. (2016, May). Intraindividual variability in gait in simple and dual-task conditions is associated with 25-year cognitive decline. International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

McDermott, K.L., McFall, G.P., Andrews, S.J., Anstey, K.J., & Dixon, R.A. (2016, May). Sex effects in predictors for non-demented carriers of Alzheimer's genetic risk. International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

McFall, G.P., Bäckman, L., & Dixon, R.A. (2016, May). Exploring gradations of Alzheimer's genetic risk using iterative interactions with vascular risk in non-demented neurocognitive aging. International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

Sapkota, S. & Dixon, R.A. (2016, May). Developing a multi-domain dementia risk index to detect early cognitive decline in non-demented older adults. International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

Thibeau, S., McFall, G.P., & Dixon, R.A. (2016, May). Alzheimer's genetic risk: A master moderator of physical activity and sex interavtions in non-demented cognitive aging. International Conference on Promoting Healthy Brain Aging and Preventing Dementia: Research and Translation, Banff, AB.

 

McDermott, K.L., McFall, G.P., & Dixon, R.A. (2016, April). Successful memory aging is associated with advantages in other cognitive and risk domains. Cognitive Aging Conference, Atlanta, GA.

 

Sapkota, S., Bäckman, L., & Dixon, R.A. (2016, April). Executive function performance and change is predicted by genetic risk (APOE), intensified by COMT and BDNF, and moderated by lifestyle activities. Cognitive Aging Conference, Atlanta, GA.

 

Thibeau, S., McFall, G.P., & Dixon, R.A. (2016, April). Everyday physical activity and mobility affect executive function level and change for older adults: Age effects within APOE risk-allele status. Cognitive Aging Conference, Atlanta, GA.

 

Dixon, R.A. (2016, March). Studying Alzheimer's before Alzheimer's: What is the role for research on preclinical trajectories, transitions, and risks? Invited public address at Neuroscience and Mental Health Institute Brain Awareness Week Public Lecture, Edmonton, AB.

 

-2015-

 

McFall, G.P., Sapkota, S., McDermott, K.L., & Dixon, R.A. (2015, November). "Good genes and good vasculature": Synergistic associations with preserved cognitive health in aging. Gerontological Society of America, Orlando, FL.

 

DeCarlo, C.A., MacDonald, S.W.S., McFall, G.P. & Dixon, R.A. (2015, October). Linking vascular health and cognitive aging: Findings from the Victoria Longitudinal Study. Canadian Association on Gerontology, Calgary, AB.

 

McFall, G.P., Sapkota, S., Wiebe, S.A., Anstey, K.J., & Dixon, R.A. (2015, July). An Alzheimer's genetic risk composite, but not APOE, intensifies diabetes-related neurocognitive slowing in non-demented older adults. Alzheimer's Association International Conference, Washington, DC.

 

Sapkota, S., Tran, T., Huan, T., Lechelt, K., MacDonald, S.W.S., Camicioli, R., Li, L., & Dixon, R.A. (2015, July). Metabolomics analyses of salivary samples discriminate normal aging, mild cognitive impairment, and Alzheimer’s disease groups and produce biomarkers predictive of neurocognitive performance. Alzheimer's Association International Conference, Washington, DC.

 

Dixon, R.A. (2015, June). Brain and cognitive aging: A life-long, dynamic, interactive, and (sometimes) modifiable continuum. Plenary Address, Canadian Undergraduate Neuroscience Conference, Edmonton, AB.

 

Dixon, R.A. (2015, March). Brain and cognitive aging as a dynamic, integrated, and modifiable spectrum of change. Keynote Address at the AIHS Research Network Fest, Edmonton, AB.

 

McDermott, K.L, Sapkota, S., McFall, G.P, & Dixon, R.A. (2015, March). Successful memory aging: A positive phenotype for health brain and cognitive aging? Neuroscience and Mental Health Institute Research Day, Edmonton, AB.

 

McFall, G.P., Wiebe, S.A., Anstey, K.J., & Dixon, R.A. (2015, February). An Alzheimer's genetic risk composite interacts with diabetes status to predict neurocognitive speed level and change in non-demented older adults. International Neuropsychological Sociey, Denver, CO.

 

Sapkota, S., McFall, G.P., Bäckman, L., & Dixon, R.A. (2015, February). Genetic risk for executive function decline in non-demented aging is associated with APOE and selectively intensified by BDNF and COMT. International Neuropsychological Sociey, Denver, CO.

 

-2014-

 

McFall, G.P., Wiebe, S.A., Vergote, D., Anstey, K.J., & Dixon, R.A. (2014, November). Cross-domain biomarker interactions influence cognitive aging: Alzheimer's related genetic markers and diabetes. Gerontological Society of America, Washington, DC.

 

Runge, S., Small, B.J., McFall, G.P., & Dixon, R.A. (2014, November). Genetic factors and cognitive aging: Evidence for neurodegenerative genetic plasticity. Gerontological Society of America, Washington, DC.

 

Sapkota, S., Wiebe, S.A., Small, B.J., & Dixon, R.A. (2014, November). Independent and interactive associations of Apolipoprotein E and Clusterin with personality traits on declarative memory performance in older adults. Gerontological Society of America, Washington, DC.

 

Thibeau, S., McFall, G.P., Wiebe, S.A., Anstey, K.J., & Dixon, R.A. (2014, November). Gene x leisure physical activity interactions affect executive functioning in aging: Cross-domain longitudinal analyses. Gerontological Society of America, Washington, DC.

 

Dixon, R.A. (2014, August). Epidemiological approaches to neurocognitive aging. Invited Address, American Psychological Association, Washington, DC.

 

Dixon, R.A. (2014, July). Tracking trajectories and detecting transitions in neurocognitive development: A lifespan approach to adulthood and aging. Invited Symposium, Human Cognitive Development: Benefits of a Lifespan Perspective (Chair: Anik de Ribaupierre), International Society for the Study of Behavioral Development, Shanghai, China.

 

Dixon, R.A. (2014, June). Integrative perspectives on neurocognitive aging and dementia: Tracking trajectories, detecting transitions, identifying risk modifiers. Invited Address, Canadian Psychological Association, Vancouver, BC.

 

Han, W., Sapkota, S., Camicioli, R., Dixon, R.A., & Li, L. (2014, June). Metabolomic analysis of human serum using isotopic labeling and high-resolution LC-MS for Parkinson's disease biomarker discovery. American Society for Mass Spectrometry, Baltimore, MD.

 

Tran, N.T., Sapkota, S., Dixon, R.A., & Li, L. (2014, June, submitted). Discovery of metabolite biomarkers for mild cognitive impairment and Alzheimer's disease by isotope labeling liquid chromatography-mass spectrometry. Canadian Chemistry Conference, Vancouver, BC.

 

Brewster, P.W.H., MacDonald, S.W.S., & Dixon, R.A. (2014, April). Norm-referenced measures of reaction time variability: Sensitivity to cognitive performance and longitudinal change in nondemented older adults. Cognitive Aging Conference, Atlanta, GA.

 

DeCarlo, C., MacDonald, S.W.S., & Dixon, R.A. (2014, April). Vascular and genetic influences moderate MCI status and stability: Evidence from the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA.

 

Dixon, R.A. (2014, April). On the hunt for biomarkers of cognitive aging: Testing modifiers and identifying mechanisms of cognitive trajectories and transitions. Invited address at Cognitive Aging Conference, Atlanta, GA.

 

MacDonald, S.W.S., Brewster, P., Halliday, D., Love, J., Hundza, S., DeCarlo, C., Lukyn, T., & Dixon, R.A. (2014, April). Intraindividual variability in both gait and gait-related cognitive performance are associated with 25-year cognitive decline. Cognitive Aging Conference, Atlanta, GA.

 

McFall, G.P., Wiebe, S.A., Vergote, D., Bäckman, L., & Dixon, R.A. (2014, April). Genetic and vascular health influences on the aging of episodic memory: Interactive effects of ApoE and pulse pressure. Cognitive Aging Conference, Atlanta, GA.

 

Runge, S.K., McFall, G.P., Small, B.J., & Dixon, R.A. (2014, April). Neurodegenerative-related genetic plasticity factors and cognitive aging: Evidence for better or worse. Cognitive Aging Conference, Atlanta, GA.

 

Sapkota, S., Tran, T., Camicioli, C., MacDonald, S.W.S., Li, L., & Dixon, R.A. (2014, April). Global metabolomics analyses discriminate phases of neurodegenerative disease and produce selective candidate biomarkers for cognitive aging. Cognitive Aging Conference, Atlanta, GA.

 

Brewster, P., Dixon, R.A., & MacDonald, S.W.S. (2014, February). Sensitivity of norm-referenced measures of reaction time variability to cognitive status in older adults: Evidence from the Victoria Longitudinal Study. International Neuropsychological Society, Seattle, WA.

 

-2013-

 

McFall, G.P., Wiebe, S.A., Vergote, D., Bäckman, L., & Dixon, R.A. (2013, November). IDE (rs6583817) and pulse pressure affect executive function level and change in older adults. Gerontological Society of America, New Orleans, LA.

 

Sapkota, S., Pearson, S., Tran, T., Zheng, J., Li, L., & Dixon, R.A. (2013, November). From global metabolomics to candidate metabolites: Linking CNS and neurocognitive phenotypes in aging. Gerontological Society of America, New Orleans, LA.

 

DeCarlo, C.A., MacDonald, S.W.S., & Dixon, R.A. (2013, July). Genetic influences and vascular health moderate MCI status and stability: Evidence from the VLS. International Neuropsychological Society/Mid-Year, Amsterdam.

 

Tran, T., Dixon, R.A., & Li, L. (2013, June). Isotope labeling liquid chromatography-mass spectrometry in metabolite biomarkers discovery for mild cognitive impairment. American Society for Mass Spectrometry, Minneapolis, MN.

 

MacDonald, S.W.S., Love, J., Brewster, P., Halliday, D., Hundza, S., Mack, T., DeCarlo, C.A., & Dixon, R.A. (2013, February). Gait and inter-letter variability under cognitive load are associated with 25-year cognitive decline. International Neuropsychological Society, Waikoloa, Hawaii.

 

Sapkota, S., Vergote, D., Jhamandas, J., Westaway, D., & Dixon, R.A. (2013, January). BDNF and COMT variants influence cognitive phenotypes in aging: Executive function, memory, neurocognitive speed. Neuroscience Research Day, Edmonton, AB.

 

-2012-

 

Hendrix-Buxton, S., McFall, G.P., Small, B.J., & Dixon, R.A. (2012, November). Genetic risk factors moderate the benefits of lifestyle activities on cognitive decline in healthy aging. Gerontological Society of America, San Diego, CA.

 

MacDonald, S.W.S, DeCarlo, C.A., & Dixon, R.A. (2012, November). What indicators of gait can tell us about cognitive aging. Gerontological Society of America, San Diego, CA.

 

Brown, C.L., Piccinin, A.M.,  Gibbons, L.E., Robitaille, A., Kennison, R.F., Lindwall, M., Mitchell, M., Shirk, S.D., Atri, A., Benitez, A., MacDonald, S.W.S., Zelinski, E., Willis, S.L., Schaie, K.W., Johansson, B., Dixon, R.A., Mungas, D.M., Cimino, C.R., & Hofer, S.M. (2012, October). Social activity and maintaining cognitive abilities in aging: Evidence from up to 21 years of longitudinal data from three nations. Canadian Association on Gerontology, Vancouver, BC.

 

Dixon, R.A. (2012, October). Tracking trajectories and transitions in neurocognitive aging: Normal aging, superaging, cognitive impairment, dementia. Invited address at Campus Alberta Neuroscience Conference on Age-related Dementia and Neurodegeneration, Edmonton, AB.

 

McFall, G.P., Wiebe, S.A., & Dixon, R.A. (2012, October). Does Type 2 Diabetes influence level and slope of executive functioning in older adults? Campus Alberta Neuroscience Conference on Age-related Dementia and Neurodegeneration, Edmonton, AB.

 

Piccinin, A.M.,  Kennison, R.F., Lindwall, M., Mitchell, M., Cimino, C.R., Benitez, A., Brown, C.L., Gibbons, L.E., MacDonald, S.W.S., Robitaille, A., Shirk, S.D., Atri, A., Zelinski, E., Willis, S.L., Schaie, K.W., Johansson, B., Dixon, R.A., Mungas, D.M., & Hofer, S.M. (2012, October). Coordinated analysis of cross-sectional and longitudinal associations between physical and cognitive activity and cognition. Canadian Association on Gerontology, Vancouver, BC.

 

Sapkota, S., Vergote, D., Westaway, D., Jhamandas, J., & Dixon, R.A. (2012, October). Selective aging magnification of COMT (rs4680) and BDNF (rs6265) associations for neurocognitive functioning in normal older adults. Campus Alberta Neuroscience Conference on Age-related Dementia and Neurodegeneration, Edmonton, AB.

 

Whitehead, B.P., Vergote, D., McFall, G.P., Sapkota, S., Westaway, D., Jhamandas, J., & Dixon, R.A. (2012, October). Exploring associations among genetic risk factors and cognition in healthy and diabetic older adults. Campus Alberta Neuroscience Conference on Age-related Dementia and Neurodegeneration, Edmonton, AB.

 

DeCarlo, C.A., Vergote, D., MacDonald, S.W.S., Whitehead, B.P., Westaway, D., Jhamandas, J., & Dixon, R.A. (2012, July). Genetic markers of cognitive status and stability in the Victoria Longitudinal Study. International Society for the Study of Behavioral Development, Edmonton, AB.

 

McFall, G.P., Wiebe, S.A., & Dixon, R.A. (2012, July). Does Type 2 Diabetes influence level and slope of executive functioning in older adults? International Society for the Study of Behavioral Development, Edmonton, AB.

 

Whitehead, B.P., Vergote, D., McFall, G.P., Sapkota, S., Westaway, D., Jhamandas, J., & Dixon, R.A. (2012, July). Exploring associations among genetic risk factors and cognition in healthy and diabetic older adults. International Society for the Study of Behavioral Development, Edmonton, AB.

 

Alwerdt, J., Small, B.J., & Dixon, R.A. (2012, April). Personality traits and cognitive performance in aging: Level but not slope effects. Cognitive Aging Conference, Atlanta, GA.

 

Dixon, R.A. (2012, April). Continuity and stability, change and variability: A balanced career in cognitive aging. Invited address at David Hultsch Career Mini-Conference, Cognitive Aging Conference, Atlanta, GA.

 

DeCarlo, C.A., Vergote, D., Whitehead, B.P., MacDonald, S.W.S., Westaway, D., Jhamandas, J., & Dixon, R.A. (2012, April). Testing independent and interactive associations among genetic and other biomarkers of cognitive risk, status, and stability in the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA.

 

Hendrix-Buxton, S., Small, B.J., McFall, G.P., & Dixon, R.A. (2012, April). Apolipoprotein E genotype moderates the benefits of lifestyle activities on cognitive decline: Evidence from the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA.

 

MacDonald, S.W.S., Love, J., Quade, T., DeCarlo, C.A., Halliday, D., & Dixon, R.A. (2012, April). Linking variability, gait, and cognition: What sensorimotor indicators can tell us about cognitive aging. Cognitive Aging Conference, Atlanta, GA.

 

McFall, G.P., Wiebe, S.A., & Dixon, R.A. (2012, April). Longitudinal analyses of executive functions in older adults: Modifying role of Type 2 Diabetes and the IDE polymorphism. Cognitive Aging Conference, Atlanta, GA.

 

Whitehead, B.P., Sapkota, S., McFall, G.P., Vergote, D., Westaway, D., Jhamandas, J., & Dixon, R.A. (2012, April). Testing effects of BDNF and COMT polymorphisms on cognitive functioning in normal aging and Type 2 Diabetes: Two replication and extension studies. Cognitive Aging Conference, Atlanta, GA.

 

McFall, G.P., Wiebe, S.A., & Dixon, R.A. (2012, March). Longitudinal analyses of executive functioning in aging: Modifying roles for Type 2 Diabetes and IDE polymorphism. 26th Annual Joseph R. Royce Research Conference, University of Alberta, Edmonton, AB.

 

Sapkota, S., McFall, G.P., Whitehead, B.P., Vergote, D., Westaway, D., Jhamandas, J., & Dixon, R.A. (2012, March). Effects of COMT and BDNF polymorphisms on neurocognitive functioning in normal aging. 26th Annual Joseph R. Royce Research Conference, University of Alberta, Edmonton, AB.

 

de Frias, C.M., & Dixon, R.A. (2012, February). Lifestyle engagement affects executive functions: Comparing cognitively elite, normal and impaired older adults. American Association for the Advancement of Science, Vancouver, BC.

 

-2011-

 

Whitehead, B.P., Vergote, D., McFall, G.P., Sapkota, S., MacDonald, S.W.S., Lechelt, K., Camicioli, R., Westaway, D., Jhamandas, J., & Dixon, R.A. (2011, November). Neurocognitive effects of genetic risk factors for Alzheimer's disease in Type 2 Diabetes patients. Glenrose Hospital SORB, Edmonton, AB.

 

Dixon, R.A. (Chair). (2011, October). Neurocognition: Diabetes and the brain. Invited symposium at the American Diabetes Association Conference on Diabetes and the Brain, Alexandria, VA.

 

Dixon, R.A. (2011, March). Brain, cognition, and aging: Longitudinal and epidemiological perspectives. Invited talk presented at the University of Alberta Association of Professors Emeriti, Edmonton, AB.

 

Whitehead, B.P., Vergote, D., McFall, G.P., MacDonald, S.W.S., Camicioli, R., Lechelt, K., Jhamandas, J., Westaway, D., & Dixon, R.A. (2011, March). Allelic distributions of APOE, BDNF, and COMT: Toward neurogenetic analyses of healthy aging, mild cognitive impairment, and Alzheimer's disease. 25th Annual Joseph R. Royce Research Conference, University of Alberta, Edmonton, AB.

 

Burton, R., Dixon, R.A., Lek, I., & Caplan, J.B. (2011, February). Qualitatively similar associative interference across the lifespan. International Neuropsychological Society, Boston, MA.

 

Dixon, R.A., de Frias, C.M., Whitehead, B.P., & McFall, G.P. (2011, February). Does cognitive status moderate memory aging: Comparing cognitively elite, normal, and impaired older adults. International Neuropsychological Society, Boston, MA.

 

McFall, G.P., Whitehead, B.P., Demsky, A., & Dixon, R.A. (2011, February). Effects of obesity on cognition: Differential roles of age and gender. International Neuropsychological Society, Boston, MA.

 

de Frias, C.M., Dixon, R.A., & Camicioli, R. (2011, February). Neurocognitive speed and inconsistency in Parkinson's disease with and without incipient dementia: An 18-month longitudinal study. Dallas Aging and Cognitive Neuroscience Conference, Dallas, TX.

 

-2010-

 

Whitehead, B.P., Vergote, D., McFall, G.P., Camicioli, R., Lechelt, K., Jhamandas, J., Westaway, D., & Dixon, R.A. (2010, December). Exploring genetic factors in healthy aging, mild cognitive impairment, and Alzheimer's disease. Translational Neuroscience Symposium, Edmonton, AB.

 

Whitehead, B.P., McFall, G.P., Vergote, D., Camicioli, R., Lechelt, K., Jhamandas, J., Westaway, D., & Dixon, R.A. (2010, November). Exploring genetic factors in healthy aging, mild cognitive impairment, and Alzheimer's disease. Glenrose Hospital Foundation Spotlight on Research, Edmonton, AB.

 

de Frias, C.M., & Dixon, R.A. (2010, November). Cognitive status and executive functions in older adults: The modulating effects of active living. Gerontological Society of America Annual Scientific Meeting, New Orleans, LA.

 

Dixon, R.A., & MacDonald, S.W.S. (2010, September). Overview of the VLS: Longitudinal and epidemiological research on aging.  Invited address at Advanced Psychometrics Methods Workshop, Friday Harbor, WA.

 

Braslavsky, A., Dixon, R.A., Tuokko, H., & MacDonald, S.W.S. (2010, July). Predicting mild cognitive impairment status with markers of cognitive and physiological change. International Conference on Alzheimer's Disease, Honolulu, Hawaii.

 

DeCarlo, C.A., MacDonald, S.W.S., & Dixon, R.A. (2010, April). Revisiting Birren’s bioAge: Linking biological and cognitive processes in the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA.

 

de Frias, C.M., Dixon, R.A., & Camicioli, R. (2010, April). Neurocognitive inconsistency in Parkinson’s disease and normal aging: An 18-month longitudinal study. Cognitive Aging Conference, Atlanta, GA.

 

Dolcos, S., Braslavsky, A., Geall, B.P., MacDonald, S.W.S., & Dixon, R.A. (2010, April). Is mild cognitive impairment associated with markers of biological vitality and lifestyle activity? Cognitive Aging Conference, Atlanta, GA.

 

Geall, B.P., Dixon, R.A., MacDonald, S.W.S., Fischer, A.L., & Hultsch, D.F. (2010, April). Intraindividual variability in neurocognitive speed performance in Type 2 Diabetes. Cognitive Aging Conference, Atlanta, GA.

 

McFall, G.P., Dolcos, S., MacDonald, S.W.S., & Dixon, R.A. (2010, April). Do biomarkers mediate Type 2 Diabetes-cognition relationships: Exploring structural models. Cognitive Aging Conference, Atlanta, GA.

 

Small, B.J., Dixon, R.A., & McArdle, J.J. (2010, April). Tracking cognitive change from 55 to 95 years of age: Findings from the Victoria Longitudinal Study. Cognitive Aging Conference, Atlanta, GA.

 

Dolcos, S., Sung, K., Denkova, E., Suen, K., Li, J., Dixon, R.A., & Dolcos, F. (2010, April). Age-related differences in the effects of automatic and deliberate emotion regulation: A functional magnetic resonance imaging investigation. Annual Meeting of the Cognitive Neuroscience Society, Montréal, QC.

 

Dixon, R.A. (2010, March). Longitudinal perspectives on memory change and aging. Invited address at The 8th Tsukuba International Conference on Memory, Tsukuba, Japan.

 

Demsky, A.N., McFall, G.P., Geall, B.P., & Dixon, R.A. (2010, March). Exploring the effects of obesity on cognition. 24th Annual Joseph R. Royce Research Conference, University of Alberta, Edmonton, AB.

 

Dolcos, S., Braslavsky, A., Geall, B.P., MacDonald, S.W.S., & Dixon, R.A. (2010, March). Is mild cognitive impairment associated with markers of biological vitality and lifestyle activity? 24th Annual Joseph R. Royce Research Conference, University of Alberta, Edmonton, AB.

 

Geall, B.P., Dixon, R.A., MacDonald, S.W.S., Fischer, A.L., & Hultsch, D.F. (2010, March). Intraindividual variability in neurocognitive speed performance in Type 2 Diabetes. 24th Annual Joseph R. Royce Research Conference, University of Alberta, Edmonton, AB.

 

McFall, G.P., Dolcos, S., MacDonald, S.W.S., & Dixon, R.A. (2010, March). Do biomarkers mediate Type 2 Diabetes-cognition relationships: Exploring structural models. 24th Annual Joseph R. Royce Research Conference, University of Alberta, Edmonton, AB.

 

Wang, R., McFall, G.P., & Dixon, R.A. (2010, March). Olfactory identification and cognitive functions in aging. 24th Annual Joseph R. Royce Research Conference, University of Alberta, Edmonton, AB.

 

Dolcos, S., Denkova, E., Sung, K., Dixon, R.A., & Dolcos, F. (2010, February). Increased automatic control in healthy elderly: Evidence for the positive affective bias in aging. Aging and Cognition Conference, Dallas, TX.

 

Dixon, R.A. (2010, February). Epidemiological perspectives on "cognitive health" in aging: Illustrations from the Victoria Longitudinal Study. Invited address at CIHR Aging Conference, Banff, AB.

 

©2020 Roger Dixon