An analysis of direct cortical response.

In the previous investigation1) the direct cortical response was recorded in various cortical regions of the rabbit. It was found that the response was a positive-negative potential in regions in which layer ‡W was well developed, and a simple surface-negative one in regions in which layer ‡W was poorly developed or almost lacking. The present experiments were performed to obtain further information about the neuronal processes concerning the response. For this purpose the behavior of the response was investigated to asphyxia, mechanical pressure, hypothermia and paired stimuli.