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Detailed program:
9:00 Joseph DeSouza,
York University
(Toronto)
“Examinations of gaze
control neural circuitry: from prefrontal cortex response suppression
signals to superior colliculus control of head
free gaze shifts in the primate”
Abstract: In everyday life, we explore our visual environment with gaze
shifting movements and during a propsortion of
this time we actively suppress the automatic urge to look at stimuli. This talk will have two themes (1) I will
discuss how the prefrontal cortex (PFC) is involved in response suppression
of visual stimuli during the antisaccade task in
both humans using fMRI and in non-human primates
using single-unit electrophysiology. (2) I will also describe some recent
head-free primate recordings from the superior colliculus
(SC) examining whether changing the initial position of fixation modulates
the recorded visual/motor receptive field properties.
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