[Chemical sensitivity of visual cortex neurons at different stages of development of feeding behavior]

Chemical sensitivity of cortical neurones to acetylcholine and noradrenaline was studied in cats at different stages of automatized instrumental food-procuring reaction. A technique was used, consisting in microionophoretic application of biologically active substances to neurones of the visual cortex in free behaving animals. It was found that separate stages of integral behaviour involve different chemical sensitivity of cortical neurones to acetylcholine and noradrenaline which determine the dynamics of spike activity.