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Zh Vyssh Nerv Deiat Im I P Pavlova. 1995 Nov-Dec;45(6):1134-42.

[The manifestation of the functional connections between neurons depending on changes in the frequency of their pulsations during the performance by animals of conditioned-reflex food-acquisition reactions].

[Article in Russian]


Multiunit activity in the motor cortex of cats was analysed in the process of food-procuring conditioning to time (interval of 2 min). Functional connections between pairs of neurons each of which changed its current firing frequency during performance of the food-procuring movement were analysed by crosscorrelation method. The same method was implemented for the analysis of functional connections between pairs of neurons which demonstrated no changes in their activity during conditioned movement. Total number of significant correlations in the phase of passive waiting was less between non-reactive neurons than between reactive ones. In the phase of active waiting this difference was eliminated. Relative increase in the number of correlations in the active waiting phase as compared with the passive one was higher in the pairs of non-reactive neurons. This finding is considered as intensification of information analysis and processing in the active phase. Lability of the functional connections was higher in the pairs of reactive neurons which might provide their capability for correction of the functional structure in the case of quick change in a situation or internal state of the animal.

[Indexed for MEDLINE]

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