SENSORY AFTER-DISCHARGES IN RAT VISUAL-CORTEX DURING ELABORATION AND EXTINCTION OF TEMPORARY CONNECTION
- 1 January 1976
- journal article
- research article
- Vol. 26 (3) , 558-563
Abstract
Sensory after-discharges (SAD) in the rat visual cortex became more intense at the background of an unconditioned drinking reaction. During the elaboration of a conditioned reflex to light (10 successive flashes of which the last 5 were reinforced) the SAD enhancement proceeded in 2 stages: the 1st coincided with the reinforcement, and the 2nd developed in the phase of a stable conditioned reflex to the 2nd or 3rd flash of the rhythmic series. When reinforcement was omitted in a test with acute extinction, SAD was depressed, and was replaced by an increased number of after-effect waves, related to the appearance of substituting movements. The enhanced synchronized EEG activity apparently plays an adaptive part, eliminating desynchronization and reducing the destructive action of the emotional stress.This publication has 2 references indexed in Scilit:
- Electroencephalographic and behavioural correlates of an instrumental reward conditioned response in rabbits a physiological and pharmacological studyElectroencephalography and Clinical Neurophysiology, 1962
- Multiple response of visual cortex of the rat to photic stimulationElectroencephalography and Clinical Neurophysiology, 1962