Jay Pratt, Psychology Department. St. George Campus, University of Toronto
Title: How Hand Position Influences Visual Processing
Ebbinghaus Empire Series 2013-2014
Abstract: While examples of perception affecting actions are common and often intuitive (for example, think of grasping an object with your eyes closed), there are also numerous examples of the more subtle effects of actions on perception. One such recent example is hand position; perception differs when the hands are far away from visual stimuli (i.e., using a keyboard on a desk) than when the hands are near the stimuli (i.e., using buttons mounted on the side of the computer monitor). This presentation will provide evidence that hand position: a) affects visually evoked potentials in visual cortex, b) influences the activity in the magnocellular and parvocellular visually pathways, and c) plays a significant role in the identification and representation of visual objects.
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