Michael-Paul Schallmo

Assistant Professor


I completed a B.S. in Brain, Behavior, and Cognitive Science at the University of Michigan, where I conducted an honors thesis using functional MRI to study word list learning with Dr. Scott A. Langenecker.  I completed my Ph.D. in Neuroscience at the University of Minnesota with Dr. Cheryl A. Olman. My doctoral work used functional MRI and behavioral psychophysics to examine how early visual processing (e.g., contrast perception) is affected by psychosis. Next, I worked as a post-doctoral research associate with Dr. Scott O. Murray in the Department of Psychology at the University of Washington. My work examined how low-level vision (e.g. motion perception) is affected by autism spectrum disorders, using methods such as functional MRI, MR spectroscopy, and EEG.

I am an Assistant Professor in the Department of Psychiatry & Behavioral Sciences. My research focuses on understanding how visual perception is affected by different psychiatric and neurological conditions. I am the Primary Investigator for an NIMH K01-funded study using EEG and MR spectroscopy to understand early visual perception in schizophrenia. I am also involved in a number of other projects focused on visual perception in clinical populations including psychosis spectrum disorders and visual snow syndrome. Within the department, I am Co-Chair of the Grand Rounds Committee, the Chairperson of a Junior Faculty Peer Mentorship Group, and Co-Director of the Ambulatory Research Center Psychophysiology Laboratory. 


  • Schizophrenia 

Administrative Assistant

(for academic support only)
Teneshia Collins

Research Summary

Dr. Schallmo's interests include: Disrupted perception in psychosis and autism spectrum disorders (ASD) The role of different neurotransmitters (e.g., GABA, glutamate) in psychosis and ASD Visual neuroscience as a tool to examine specific hypotheses about the neural mechanisms of psychiatric disorders Combining methods (e.g., functional MRI, EEG, MR spectroscopy, visual psychophysics, pharmacology) to study a single research question in human subjects


PhD, University of Minnesota
Major: Neuroscience
BS, Honors & Distinction, University of Michigan
Major: Brain, Behavior, and Cognitive Science

Honors and Recognition

Predoctoral NRSA, NIH
Travel Award, Society of Biological Psychiatry
COVID-19 Bridge Funding Award
Grant-in-Aid Award (#411536), University of Minnesota Office of the VP of Research
Travel Award, American College of Neuropsychopharmacology
Career Development Award (K01 MH120278), NIH
Scholarship to attend ERP Bootcamp Course, University of California, Davis
Assistant Professor Startup Award (NF-0318-02), University of Minnesota Foundation
Postdoctoral NRSA (F32 EY025121), NIH
Graduate Research Fellowship (00006595), NSF

Professional Memberships

Schizophrenia International Research Society
Vision Sciences Society
Society for Research in Pyschopathology
Society of Neuroscience
Selected Publications

Selected Publications

Schallmo, M. P., Weldon, K.B., Kamath, R.S., Moser, H.R., Killebrew, K.W., Demro, C., Grant, A.N., Marjańska, M., Sponheim, S.R., Olman, C.A., 2023. The psychosis human connectome project: Design and rationale for studies of visual neurophysiology. NeuroImage, 272 120060.
Pokorny, V.J., Schallmo, M.-P., Sponheim, S.R., Olman, C.A., 2023. Weakened untuned gain control is associated with schizophrenia while atypical orientation-tuned suppression depends on visual acuity. Journal of Vision, 23 (2): 2.
doi: https://doi.org/10.1167/jov.23.2.2 PubMed ID: 36723929.
Schallmo, M.-P., Weldon, K. B., Burton, P. C., Sponheim, S. R., Olman, C. A., 2021. Assessing methods for geometric distortion compensation in 7 T gradient echo functional MRI data. HUMAN BRAIN MAPPING, 42 (13): 4205-4223.
doi: http://dx.doi.org/10.1002/hbm.255404.554 PubMed ID: 34156132.
Demro, C., Mueller, B. A., Kent, J. S., Burton, P. C., Schallmo, M. P., Lim, K. O., Sponheim, S. R., 2021. The psychosis Human Connectome Project: An overview. NeuroImage, 241 (1): 118439.
Ramsey, I. S., Schallmo, M.-P., Biagianti, B., Fisher, M., Vinogradov, S., Sponheim, S. R., 2020. Deficits in auditory and visual sensory discrimination reflect a genetic liability for psychosis and predict disruptions in global cognitive functioning. Frontiers in Human Neuroscience, 11 638.
doi: https://doi.org/10.3389/fpsyt.2020.00638 PubMed ID: 32733293.
Murray, S. O., Kolodny, T., Schallmo, M.-P., Gerdts, J., Bernier, R. A. , 2020. ate neural response components are altered in autism spectrum disorder. Frontiers in Human Neuroscience, 14 241.
doi: https://doi.org/10.3389/fnhum.2020.00241 PubMed ID: 32694986.
Kolodny, T., Schallmo, M.-P., Gerdts, J., Bernier, R. A., Murray, S. O., Response decoupling in hierarchical cortical circuits: A unique feature of autism spectrum disorder. Journal of Neuroscience, 40 (11): 2269-2281.
Schallmo, M. P., Kolodny, T., Kale, A. M., Millin, R., Flevaris, A. V., Edden, R. A.E., Gerdts, J., Bernier, R. A., Murray, S. O., 2020. Weaker neural suppression in autism. Nature Communications, 11 (2675): 1-13.
doi: https://doi.org/10.1038/s41467-020-16495-z PubMed ID: 32472088.
Schallmo, M. P., et al., 2020. Comparison of multivendor single-voxel MR spectroscopy data acquired in healthy brain at 26 sites. Radiology, 295 (1): 171-180.
doi: https://doi.org/10.1148/radiol.2020191037 PubMed ID: 32043950.
Kolodny, T., Schallmo, M. P., Gerdts, J., Edden, R. A.E., Bernier, R. A., Murray, S. O., 2020. Concentrations of Cortical GABA and Glutamate in Young Adults With Autism Spectrum Disorder. Autism Researcher, 13 (7): 1111-1129.
doi: https://doi.org/10.1002/aur.2300 PubMed ID: 32297709.
Selected Presentations

Selected Presentations

Abdullahi, K.S., Montoya, S.A., Killebrew, K.W., Moser, H.R., Sponheim, S.R., Schallmo, M.-P. "Behavioral and EEG measures of binocular rivalry in people with schizophrenia", Vision Sciences Society Meeting, St Pete Beach, Florida, May 24, 2023.
Moser, H.R., Abdullahi, K.S., Miriyagalla, A., Montoya, S.A., Killebrew, K.W., Sponheim, S.R., Schallmo, M.-P. "Behavioral and EEG measures of contrast surround suppression mechanisms in people with schizophrenia.", Vision Sciences Society Meeting, St Pete Beach, Florida, May 23, 2023.
Mulder, C., Montoya, S.A., Lee, M.S., Engel, S.A., Schallmo, M.-P. "Photophobia and poor night vision are the most disruptive symptoms of visual snow syndrome.", Vision Sciences Society Meeting, St Pete Beach, Florida, May 22, 2023.
Killebrew, K.W., Moser, H.R., Grant, A.N., Sponheim, S.R., Anker, J., Schallmo, M.-P. "The effect of tobacco use on performance in a structure-from-motion task among patients with psychotic psychopathology.", Vision Sciences Society Meeting, St Pete Beach, Florida, May 21, 2023.
Montoya, S.A., Mulder, C., Lee, M.S., Schallmo, M.-P., Engel, S.A. "Visual snow is affected by contrast adaptation", Vision Sciences Society Meeting, St Pete Beach, Florida, May 19, 2023.
Basgoze, Z., Hayee, S., Talaie, P., Schallmo, M.-P., Marjańska, M., Cullen, K. R. "Anterior cingulate cortex metabolism in adolescent depression.", Society of Biological Psychiatry Meeting, San Diego, California, April 29, 2023.
Schallmo, M.-P., Killebrew, K.W., Demro, C., Sponheim, S.R., Marjańska, M. "Neurochemical alterations in occipital and prefrontal cortex measured with 7 T MRS as part of the Psychosis Human Connectome Project.", American College of Neuropsychopharmacology Meeting, Scottsdale, Arizona, December 06, 2022.
Montoya, S.A., Lee, M.S., Engel, S.A., Schallmo, M.-P. "A new method for measuring visual snow symptoms.", Society for Neuroscience Meeting, San Diego, California, November 16, 2022.
Montoya, S.A., Less, M.S., Mudler, C., Engel, S.A., Schallmo, M.-P. "Quantifying visual snow symptoms with a matching task.", Optica Fall Vision Meeting, Rochester, New York, October 20, 2022.
Montoya, S.A., Lee, M.S., Engel, S.A., Schallmo, M.-P. "A new method for measuring visual snow symptoms.", Vision Sciences Society Meeting, St Pete Beach, Florida, May 18, 2022.



Department of Psychiatry & Behavioral Sciences, F282/2A West Building, 2450 Riverside Avenue South, Minneapolis, MN 55454