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Cortico hypothalamic interneuronal correlation in cat learning



Cortico hypothalamic interneuronal correlation in cat learning



Zhurnal Vysshei Nervnoi Deyatel'nosti Imeni I P Pavlova 38(6): 1017-1026



Spatial-temporal organization of neuronal activity in the motor cortex and hypothalamus lateral nucleus (inter- and intrastructural neuronal interactions) in cats with elaborated conditioned alimentary instrumental reflexes were studied by means of recording the multineuronal activity of structures under investigation and with the use of cross-correlation method of analysis. An increase was shown of the number of cortico-hypothalamic neurones pairs acting in interconnection after elaboration of conditioned reflexes, and a decrease of their number at extinction due to interaction with temporal delays (up to 30 ms). Local (intrastructural) connections of the motor cortex and lateral hypothalamus had opposite dynamics at extinction of the conditioned reflexes: the number of the first increased and the number of the second decreased. The character of the interconnected activity of neurones pairs of interstructural interaction is discussed.

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