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KMID : 1204320090250040341
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Laboratory Animal Research
2009 Volume.25 No. 4 p.341 ~ p.346
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Responses in Visual Cortex Areas 17 and 18 with Rotating Windmill Patterns
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Kim Jong-Nam
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Abstract
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The aim of this study was to investigate the response properties of neurons in areas 17 and 18 of the visual cortex in anaesthetized and paralyzed cats with rotating windmill patterns (rotating motion). Neurons (n=55) of areas 17 and 18, activated by rotating windmill patterns, were found in this study. They, recorded from left cortex, were activated more to the anticlockwise motion rather than to the clockwise motion in the right visual field (mean=?29.7, SD=32.96). This is sensible because the anticlockwise motion in the right visual field means coming objects toward the animal. There might be correlations between the optimal number of vanes of rotating windmill patterns (rotating motion) and optimal spatial frequency of drifting sinusoidal gratings (translation motion) or between the optimal rotating speed (rotating motion) and the optimal speed of drifting grating (translation motion). But, these correlations (p=0.89 and p=0.48, respectively) were weak.
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KEYWORD
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Feline, electrophysiology:sinusoidal grating, windmill pattern, visual cortex
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