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Zh Vyssh Nerv Deiat Im I P Pavlova. 1990 Mar-Apr;40(2):331-9.

[The reflection of the operations of comparing afferent flow with internal pretuning in the neuronal impulse activity of the frontal cortex in the dog].

[Article in Russian]

Abstract

From 192 neurons, recorded in the frontal cortex of dogs trained for differential classical conditioning of salivary reflex, 24 cells were identified related to the detection of matching-mismatching conditioned and unconditioned stimuli (CS and US) to internal set. Impulse reactions of the 1-st group of neurones (11 cells) to US disappeared, when any deviation from standard pattern of CS-US pairing occurred or when US characteristics were suddenly changed. These reactions developed again at the 3-5th repeated presentation of the stimuli delivered in "new" regime. Neurones of the 2-nd group (13 cells) were activated in response to CS only when two sequential CSs had different meaning. The 1-st group of neurones is considered as detectors of matching, and the 2-nd group--as detectors of mismatching the stimulus to its neural model, formed by mechanism of reinforcement.

PMID:
2166395
[Indexed for MEDLINE]

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