Aaron P. Johnson, Ph.D.

Education

• B.Sc., Physiology, University of St-Andrews, St-Andrews, Scotland UK, 1998
• Ph.D., Electronics and Electrical Engineering, University of Glasgow, Glasgow, Scotland UK, 2002
• Postdoctorate, Ophtalmology, McGill University, 2002-2006

Research interests

Visual perception; how visual disorders (macular degeneration), cognitive disorders (mild traumatic brain injury / concussion) and loss of other senses (hearing loss) affect the visual system, in particular, eye movements?

Research laboratory

Concordia Vision Lab

Recent publications

Ellemberg, D., Hansen, B.C. & Johnson, A.P. (2012). The developing visual system is not optimally sensitive to the spatial statistics of natural images. Vision Research, 67, 1-7.

Hansen, B.C., Johnson,A.P. & Ellemberg, D. (2012). Different spatial frequency bands selectively signal for natural image statistics in the early visual system. Journal of Neurophysiology, 108(8), 2160-2172.

Johnson, A.P., Woods-Fry, H. & Wittich, W. (2012). Magnification does not improve performance in an emotion recognition task for patients with age-related macular degeneration. Investigative Ophthalmology & Visual Science, 12(53); 4386.

Hansen, B.C., Jacques, T., Johnson, A.P. & Ellemberg, D. (2011). From spatial frequency contrast to edge preponderance: the differential modulation of early visual evoked potentials by natural scene stimuli. Visual Neuroscience, 28(3), 221-237.

Johnson, A.P., Richard, B., Hansen, B.C. & Ellemberg, D. (2011). The magnitude of center-surround facilitation in the discrimination of amplitude spectrum is dependent on the amplitude of the surround. Journal of Vision, 11(7), 14.

Johnson, A.P. & Gurnsey, R. (2010). Size scaling compensates for sensitivity loss produced by a simulated central scotoma in a shape-from-texture task. Journal of Vision, 10(12), 18.

Research orientation

Axis 1

Research topic

Research Site

CRIR – Lethbridge-Layton-Mackay Rehabilitation Centre (MAB site) of the CIUSSS WCM

University Affiliation