Biography

Dr. Schweizer’s area of interest is in Cognitive Neuroscience and Neuroimaging, focusing on understanding the neural bases for human cognitive and real-world functioning using experimental cognitive paradigms, neuroimaging and neuropsychology. A better understanding of the complex neural systems supporting various cognitive and real-world functions and their breakdown after brain damage (e.g. Stroke, Traumatic Brain Injury, Alzheimer’s Disease) is essential in educating physicians, patients and families and critical in designing effective treatment strategies. Dr. Schweizer and his team have developed a novel and fully immersive driving simulator and touch tablet placed in a 3.0 Tesla functional magnetic resonance imaging (fMRI) system. The MRI compatible equipment can capture brain activity during real world tasks. Dr. Schweizer and his group are also investigating novel approaches to image processing and data analysis in functional neuroimaging, in order to improve the reliability and interpretability of fMRI findings, particularly in clinical and aging populations. Dr. Schweizer is an Ontario Early Researcher Award holder and is supported by a New Investigator Award from the Heart and Stroke Foundation of Canada and research awards from the Ministry of Transportation Ontario and other National peer-reviewed funding agencies including Canadian Institutes for Health Research.

Recent Publications

  1. Lee, LE, Cohen-Adad, J, Vavasour, IM, Guenette, M, Sawicka, K, Rashidi-Ranjbar, N et al.. Cervical Spinal Cord Magnetization Transfer Ratio and Its Relationship With Clinical Outcomes in Multiple Sclerosis. Ann Clin Transl Neurol. 2025; :. doi: 10.1002/acn3.70113. PubMed PMID:40583289 .
  2. Demchenko, I, Tailor, I, Chegini, S, Yu, H, Nezhad, FG, Rueda, A et al.. Human Applications of Transcranial Temporal Interference Stimulation: A Systematic Review. medRxiv. 2025; :. doi: 10.1101/2025.05.16.25327804. PubMed PMID:40463528 PubMed Central PMC12132165.
  3. Churchill, NW, Hutchison, MG, Graham, SJ, Schweizer, TA. Post-Concussion Changes in the Functional Brain Connectome Relative to Pre-Injury Baseline: A Prospective Observational Study. J Neurotrauma. 2025; :. doi: 10.1089/neu.2024.0499. PubMed PMID:40444365 .
  4. Rashidi-Ranjbar, N, Churchill, NW, Black, SE, Kumar, S, Tartaglia, MC, Freedman, M et al.. A Cross Sectional and Longitudinal Assessment of Neuropsychiatric Symptoms and Brain Functional Connectivity in Patients With Mild Cognitive Impairment, Cerebrovascular Disease and Parkinson Disease. Int J Geriatr Psychiatry. 2025;40 (4):e70075. doi: 10.1002/gps.70075. PubMed PMID:40246706 PubMed Central PMC12006058.
  5. Fan, J, Churchill, N, Fadhel, A, Fornazzari, LR, De Luca, V, Ismail, Z et al.. Determining the Role of Sex and APOE4 status on Psychosis in Alzheimer's Disease. J Geriatr Psychiatry Neurol. 2025;38 (4):235-240. doi: 10.1177/08919887241313225. PubMed PMID:40128188 PubMed Central PMC12022363.
  6. Churchill, NW, Hutchison, MG, Graham, SJ, Schweizer, TA. Post-Concussion Brain Changes Relative to Pre-Injury White Matter and Cerebral Blood Flow: A Prospective Observational Study. Neurology. 2025;104 (7):e213374. doi: 10.1212/WNL.0000000000213374. PubMed PMID:40073308 .
  7. Menze, F, Churchill, NW, Schweizer, TA, Graham, SJ. Simulated driving behavior over the adult age span. Front Aging Neurosci. 2025;17 :1496224. doi: 10.3389/fnagi.2025.1496224. PubMed PMID:40046786 PubMed Central PMC11879975.
  8. Baltazar, VA, Demchenko, I, Tassone, VK, Sousa-Ho, RL, Schweizer, TA, Bhat, V et al.. Brain-based correlates of depression and traumatic brain injury: a systematic review of structural and functional magnetic resonance imaging studies. Front Neuroimaging. 2024;3 :1465612. doi: 10.3389/fnimg.2024.1465612. PubMed PMID:39563730 PubMed Central PMC11573519.
  9. Khoury, MA, Valcic, M, Churchill, NW, Di Battista, A, De Luca, V, Fornazzari, LR et al.. Sex Differences in Cortical Thickness and Neuropsychiatric Symptom Burden Based on APOE4 Homozygosity in Alzheimer's Disease. Am J Med Genet B Neuropsychiatr Genet. 2025;198 (2):e33008. doi: 10.1002/ajmg.b.33008. PubMed PMID:39350506 .
  10. Demchenko, I, Rampersad, S, Datta, A, Horn, A, Churchill, NW, Kennedy, SH et al.. Target engagement of the subgenual anterior cingulate cortex with transcranial temporal interference stimulation in major depressive disorder: a protocol for a randomized sham-controlled trial. Front Neurosci. 2024;18 :1390250. doi: 10.3389/fnins.2024.1390250. PubMed PMID:39268031 PubMed Central PMC11390435.
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Affiliations & Other Activities

  • Scientist, Keenan Research Centre for Biomedical Science, St. Michael’s Hospital
  • Associate Professor, Faculty of Medicine (Neurosurgery), University of Toronto
  • Associate Professor, Institute of Biomaterials and Biomedical Engineering (IBBME), University of Toronto