Nathan Crowder



Phone: (902) 494-6025
Fax: (902) 494-6585
Mailing Address: 
Dalhousie University, Life Sciences Centre, Rm 3337, 1355 Oxford Street, P.O. Box 15000, Halifax, NS B3H 4R2
Research Topics:
  • Neuroscience
  • Vision
  • Electrophysiology
  • Optogenetics
  • Animal Behaviour
  • Development
  • Psychophysics


PDF (Australian National University, Emory University, University of Alberta)
PhD (University of Alberta)
BA/BSc (University of Alberta)

Research Interests

Dr. Crowder’s research focuses on how the brain processes visual information, and how animals use this information to make perceptual decisions. This work includes the characterization of normal visual function as well as visual deficits that result from abnormal vision during development. Techniques used in the laboratory include electrophysiology, optogenetics, behavioral tasks in transgenic mice, psychophysics, and computer modeling.

Selected Publications

  • Shapiro, J.T., Michaud, N.M., King, J.L., Crowder, N.A. (2022) Optogenetic Activation of Interneuron Subtypes Modulates Visual Contrast Responses of Mouse V1 Neurons. Cerebral Cortex. 32: 1110-1124. 
  • Mitchell, D.E., Crowder, N.A., Duffy, K.R. (2019) The critical period for darkness-induced recovery of the vision of the amblyopic eye following early monocular deprivation. Journal of Vision. 19(6):25. 
  • King, J.L., Lowe, M.P., Stover, K.R., Wong, A.A., Crowder, N.A. (2016) Adaptive processes in the thalamus and cortex revealed by silencing of primary visual cortex during contrast adaptation. Current Biology 26:1295-1300.
  • Ibbotson, M.R., Crowder, N.A., Cloherty, S.L., Price, N.S., Mustari M.J. (2008). Saccadic modulation of neural responses: possible roles in saccadic suppression, enhancement, and time compression. Journal of Neuroscience 28: 10952-10960.

Awards and Honours

2010 Dalhousie Undergraduate Neuroscience Society (UNS) Professor of the Year


Society for Neuroscience (2000 – present)
Canadian Association for Neuroscience (2010 - present)


Perceptual Processes, NESC/PSYO 2150
Cellular Neuroscience, NESC/PHYL/PSYO 2570 (coordinator)
Sensory Neuroscience 1: Vision, NESC/PSYO 3051