Abstract
Movement-related electrical reactions of neuronal units localized in field 2 of the frontal cortex were studied in albino rats performing fast food-procuring movements under conditions of unrestrained behavior. According to the temporal characteristics of the changes in the neuronal spike activity, three types of reactions were classified: (i) activation that forestalled the movement initiation for 1.0–1.5 sec; (ii) activation or inhibition forestalling this beginning for 0.20–0.26 sec; and (iii) activation in the course of a performed movement. Considerations about the involvement of the neurons of various cortical layers in the mechanisms of programing, switching on, and current control of the efficiency of performance of food-procuring movements are proposed, and the role of the frontal cortex in these processes is discussed.
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