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Associate Professor:
- Department of Neurobiology & Anatomy
- Department of Biomedical Engineering
- Center for Visual Science
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Movement Field of a Cell in the Caudal Superior Colliculus of the Rhesus Monkey
In a monkey free to move its head, neural
activity was recorded from a single unit in the intermediate layers of the
SC while a monkey made gaze shifts of different amplitudes and directions. The
figure plots the horizontal (abscissa) and vertical (ordinate) amplitude
of the gaze shift and the average rate of discharge of the cell (Z-axis,
color). Data from 864 trials were used to produce this figure. Analysis
of cells like this in the SC led to the hypothesis that a single signal
of desired gaze displacement is derived from the location of activity within
the superior colliculus. Research in my lab focuses on understanding
the neural control of visual orienting movements and the transformation
of SC commands into appropriate signals to drive coordinated eye-head movements.
