Consult our research
Preprints:
Walker C, Barnoin G, Bennett M, the PREVENT-AD Research Group, Villeneuve S, Geddes MR (2026). The neural basis of prosocial effort-based decision-making in older adults at risk for Alzheimer鈥檚 disease. Medrxiv.
Tremblay SA, Tulsi J, Yang D, Alsibai Z, McDonald I, Aladeeb R, Novielli A, Wong M, Freitas JG, Dhir V, Rajah MN, Godard-Sebillotte C, Altuntur S, Karunananthan S, Geddes MR (2026). Review of current research practices in social and structural determinants of health data collection across Canadian longitudinal studies of aging and dementia. SSRN.
Dhir V, Sarmiento I, McDonald I, Ge虂linas Faucher M, Tremblay SA, Mark J. Yaffe MJ, Andersson A, Geddes MR (2026). Gender-Related Facilitators and Barriers to Participation in Research on Aging using Fuzzy Cognitive Mapping. .听
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Clinical Decision-Making Tools and Clinical Guidance:
Geddes, M. R., O鈥機onnell, M. E., Fisk, J. D., Gauthier, S., Camicioli, R., Ismail, Z., & Covid-19, for the A. S. of C. T. F. on D. C. B. P. for. (2020). Remote cognitive and behavioral assessment: Report of the Alzheimer Society of Canada Task Force on dementia care best practices for COVID-19. Alzheimer鈥檚 & Dementia: Diagnosis, Assessment & Disease Monitoring, 12(1), e12111.
Remote Cognitive Assessment Readiness Tool in partnership with the Canadian Consortium on Neurodegeneration in Aging:听听(2025).
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Selected Publications:
Rajah NM, Dixon Epstein Stern Y, and the Brain Resilience and Diversity in Aging and Dementia Collaboratory (2026). Brain resilience and diversity in aging and dementia. Nature Reviews Neuroscience.
Mohammediyan B, Baril A, Fajardo-Valdez A, St-Onge F, Carrier J, Geddes MR, Ducharme S, Montembeault M, Soucy JP, Breitner JC, Poirier J, Villeneuve S (2026). Longitudinal association between sleep and Alzheimer pathology. Accepted, Alzheimer鈥檚 & Dementia.
Thovinakere N, Ghosh S, Iturria-Medina Y, Geddes MR (2025). Social determinants of health and functional brain connectivity predict long-term physical activity adherence after a new cardiovascular diagnosis. Proceedings of the National Academy of Sciences Nexus. Vol 4, Issue 10, pgaf304,
Walker CS, Noriega de la Colina A, Li L, Boulanger C, Thovinakere N, Barnoin G, Bennett M, Caplan J, C么t茅 L, Elbaz S, Fock Ka Bao S, Kara R, Lavoie N, Nguyen M, Otaner F, Pallett-Wiesel H, Johanie Pich茅 J, Powers A, Ricciardelli S, Williams K, D茅ry D, Tremblay-Mercier J, The PREVENT-AD Research Group, Poirier J, Villeneuve S, Kramer AF, Geddes MR (2025). Protocol for an intergenerational intervention to enhance physical activity engagement in older adults at risk for Alzheimer鈥檚 disease. The Journal of Prevention of Alzheimer鈥檚 Disease.
Friedman NHM, Hallot S, Itzhak I, Desmarais P, Henri-Bhargava A, Pettersen J, Lee L, Fisk JD, Camicioli R, McLaughlin P, Khanassov V, Chertkow H, Freedman M, O鈥機onnell ME, Geddes MR (2025). Red flags for remote cognitive assessment: An expert consensus study using the Delphi method on behalf of the Canadian Consortium on Neurodegeneration in Aging. The Journal of Alzheimer鈥檚 Disease. 106(2):527-536.
Babulal GM, Geddes MR, Germine LT (2025). From Algorithms to Zero-Shot Learning: How Artificial Intelligence Is Redefining Gerontological Research. The Journals of Gerontology: Series B. 80(8).
Villeneuve S, Poirier J, Breitner JCS, Tremblay-Mercier J, Remz J, Raoult JM, Yakoub Y, Gallego-Rudolf J, Qiu T, Fajardo Valdez A, Mohammediyan B, Javanray M, Metz A, Sanami S, Rudolf Wearn A, Pastor-Bernier A, Edde M, Gonneaud J, Strikwerda-Brown C, Leppert IR, Tardif CL, Gauthier CJ, Descoteaux M, Dadar M, Vachon-Presseau E, Baril AA, Ducharme S, Maxime Montembeault M, Geddes MR, Soucy JP, Rajah N, Laforce R, Bocti C, Davatzikos C, Bellec P, Rosa-Neto P, Baillet S, Evans AC, Collins DL, Chakravarty MM, Blennow K, Zetterberg H, Spreng RN, Pichet Binette A, & the PREVENT-AD Research Group (2025). The PREVENT-AD cohort: accelerating Alzheimer鈥檚 disease research and treatment in Canada and beyond. Alzheimer's & Dementia. 21:e70653
Yakoub Y, Gonzalez-Ortiz F, Ashton NJ, Dery C, Strikwerda-Brown C, St-Onge FF, Ourry V, Scholl M, Geddes MR, Ducharme S, Montembeault M, Rosa-Neto P, Soucy JP, Breitner JCS, Zetterberg H, Blennow K, Poirier J, Villeneuve S, PREVENT-AD Research Group (2025). Plasma p-tau217 identifies cognitive normal older adults who will develop cognitive impairment in a 10-year window. Alzheimer鈥檚 & Dementia 10.1002/alz.14537
Walker CS, Li L, Baracchini G, Tremblay-Mercier J, Villeneuve S, Spreng RN, The PREVENT-AD Research Group, Geddes MR (2024). Neurobehavioral mechanisms influencing the association between generativity, the desire to promote well-being of younger generations, and purpose in life in older adults at risk for Alzheimer鈥� disease. The Journals of Gerontology: Series B, Volume 79, Issue 6, June 2024, gbae060,
Ai M, Morris TP, Noriega de la Colina A, Thovinakere N, Tremblay-Mercier J, Villeneuve S, Whitfield-Gabrieli, Kramer AF, Geddes MR (2024). Midlife physical activity engagement is associated with later-life cognition and brain health. Neurobiology of Aging, 134, 146-159.
Thovinakere, N., Ai, M., Noriega de la Colina, A., Walker, C., Baracchini, G., Tremblay-Mercier, J., Villeneuve, S., Spreng, N., & Geddes, M.R. (2024). Ventromedial Frontoinsular Connectivity is Associated with Long-term Smoking Behavior Change in Aging.听Imaging Neuroscience,听2.听
Noriega de la Colina, A., Morris, T. P., Kramer, A. F., Kaushal, N., & Geddes, M. R. (2024). Your move: A precision medicine framework for physical activity in aging.听Npj Aging,听10(1), 16.听
Ai M, Morris TP, Zhang J, Noriega de la Colina A, Tremblay-Mercier J, Villeneuve S, Whitfield-Gabrieli, Kramer AF, Geddes MR (2023). Resting-state MRI functional connectivity as a neural correlate of multidomain lifestyle adherence in older adults at risk for Alzheimer鈥檚 disease. Scientific Reports. 13, 7487.
Belden A, Quinci MA, Geddes MR, Donovan N, Hanser SB, Loui P (2023). Functional Organization of Auditory and Reward Systems in Healthy Aging. Journal of Cognitive Neuroscience.听
Noonan M*, Geddes MR*, Mars MB, Fellows LK. *shared first authorship (2022). Characterization of structural and functional network organization after focal prefrontal lesions in humans in proof of principle study. Brain Structure and Function. 227, 3027鈥�3041.
Quinci MA, Belden A, Goutama V, Gong D, Hanser S, Donovan NJ, Geddes MR, Loui P (2022). Longitudinal Changes in Auditory and Reward Systems Following Receptive Music-Based Intervention in Older Adults. Scientific Reports. 12, 11517.
Morris TP, Kuyci A, Arnold Anteraper S, Geddes MR, Nieto-Casta帽on A, Burzynska A, Gothe N, Fanning J, Salerno E, Whitfield-Gabrieli S, Hillman CH, McAuley E, Kramer AF (2022). Resting State Functional Connectivity Predicts Future Changes in Sedentary Behavior. Scientific Reports. 12, 940.
Walker C, Noriega de la Colina A, Geddes MR (2022). Behavioural interventions to enhance empathy in Alzheimer鈥檚 disease care. World Alzheimer鈥檚 Report 2022. Life after diagnosis: Navigating treatment, care and support. London, England: Alzheimer's Disease International.
Geddes MR, Fisk JD, Camicioli R, Ismail Z, O鈥機onnell ME., C. Munro Cullum (2021). Remote Cognitive Assessment: Guiding Principles and Future Directions. World Alzheimer鈥檚 Report 2021: Journey through the diagnosis of dementia. London, England: Alzheimer's Disease International.
Ai M, Morris TP, Ordway C, Quino帽ez E, D鈥橝gostino F, Noriega de la Colina A, Whitfield-Gabrieli S, Hillman CH, Pindus DM, Kramer AF, Geddes MR (2021). The daily activity study of health (DASH): A pilot randomized controlled trial to enhance motivation and physical activity in sedentary older adults. Contemporary Clinical Trials. 106, 106405.听听
Wang, D., Belden, A., Hanser, S. B., Geddes, M. R., & Loui, P. (2020). Resting-State Connectivity of Auditory and Reward Systems in Alzheimer鈥檚 Disease and Mild Cognitive Impairment.听Frontiers in Human Neuroscience,听14, 280.听
Geddes, M. R., Mattfeld, A. T., Angeles, C. de los, Keshavan, A., & Gabrieli, J. D. E. (2018). Human aging reduces the neurobehavioral influence of motivation on episodic memory.听NeuroImage,听171, 296鈥�310.听
Arnold Anteraper, S., Guell, X., Whitfield-Gabrieli, S., Triantafyllou, C., Mattfeld, A. T., Gabrieli, J. D., & Geddes, M. R. (2018). Resting-state functional connectivity of the subthalamic nucleus to limbic, associative, and motor networks.听Brain Connectivity,听8(1), 22鈥�32.听
Geddes, M. R., Tie, Y., Gabrieli, J. D. E., McGinnis, S. M., Golby, A. J., & Whitfield-Gabrieli, S. (2016). Altered functional connectivity in lesional peduncular hallucinosis with REM sleep behavior disorder.听Cortex; a Journal Devoted to the Study of the Nervous System and Behavior,听74, 96鈥�106.听
Geddes, M. R. (2015). Memory and Mechanism.听Neurology,听85(13), 1180.听
Geddes, M. R., Tsuchida, A., Ashley, V., Swick, D., & Fellows, L. K. (2014). Material-specific interference control is dissociable and lateralized in human prefrontal cortex.听Neuropsychologia,听64, 310鈥�319.听