Pattern processing and slow-wave activity in visual cortex of cat

Electroencephalography and Clinical Neurophysiology
J D Glass, R W Hall

Abstract

Animal models play a significant role in research on human disorders. In vision research, the recording of single-neuron activity from animals has been of great value to our understanding of pattern processing mechanisms. In humans, investigations of visual function have typically utilized slow-wave activity. We have studied in cats the relationship between pattern processing and the slow-wave evoked response recorded from cortical areas 17, 18, 19 and 4 in the awake cat. We have found that within a restricted latency range the response in 17, 18 and 19 reflects the processing of the patterness of a visual stimulus. A comparison of response components occurring prior to 50 msec poststimulus showed few significant differences (P less than 0.05) between peak amplitudes evoked by a diffuse and a checkerboard pattern stimulus. A much higher proportion of response components occurring after 50 msec but prior to 300 msec poststimulus were significantly different (P less than 0.05). The response recorded from area 4 (motor cortex) did not show significant differences as a function of the diffuse and patterned stimuli. Our findings show that the slow wave recorded from cat visual cortex can reflect the pattern processing mechanisms of ...Continue Reading

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Citations

Mar 1, 1982·Electroencephalography and Clinical Neurophysiology·J D Glass, R W Hall

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