Tuesday, September 17, 2019 — 3:30 PM EDT

Cortical Interactions in the Oculomotor System

M. Fallah (York University)
 
Previous neurophysiological studies have demonstrated that saccade curvatures are the result of excitatory and competitive interactions between potential saccade goals in the intermediate layers of the superior colliculus (SCi) and frontal eye field (FEF), whereby the resulting saccade curvature is proportional to the level of unresolved activity encoding a competing saccade vector. This suggests that the magnitudes of saccade curvature vary continuously along a gradient of oculomotor excitation and inhibition. Given that top-down factors like task relevance are encoded by the visuomotor neurons of the oculomotor system (reviewed by Fecteau & Munoz, 2006), this predicts a functional relationship between saccade curvature and cortical visual processing. I will be presenting a series of studies that investigates the featural and temporal factors affecting saccadic encoding, as measured by saccade curvatures. These studies provide increasing evidence that visual processing can be read out of saccade metrics.

Cost 
Free
Location 
EC5 - East Campus 5
Room 2004
305 Phillip St.

Waterloo, ON N2L 5Z5
Canada

Waterloo researchers among top in Canada

Chris Eliasmith writing on a whiteboardChris Eliasmith, Director of the Centre for Theoretical Neuroscience, received the prestigious John C. Polanyi Award  and is also an inaugural member of the Royal Society of Canada's College of New Scholars, Artists, and Scientists.

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How to Build a Brain

Chris Eliasmith’s team at the Centre for Theoretical Neuroscience has built Spaun, the world’s largest simulation of a functioning brain. The related book is now available and for the full article Waterloo Stories.

Nengo

This is a collection of coverage of work with Nengo (Neural Engineering Objects) that has appeared in the popular press recently.