Document Detail

Functional asymmetry of the frontal cortex and lateral hypothalamus of cats during an operant food-related conditioned reflex.
MedLine Citation:
PMID:  15526426     Owner:  NLM     Status:  MEDLINE    
The extent of correlation and the latency of evoked potentials to sound, recorded bilaterally in the frontal cortex and lateral hypothalamus of cats, were studied at different stages of the acquisition of an operant food-related reflex and during sudden transfer to 30% food reinforcement. High correlation coefficients between the evoked responses of the cortex and hypothalamus with left-sided dominance were seen in conditions of high levels of food motivation at the beginning of each experiment and in conditions of the high-probability appearance of the acquired conditioned reflex throughout the rest of the experiment. Comparison of the peak latencies of the early positive (P55-80) components of evoked potentials on the right and left sides showed that shorter latent periods were seen in the cortex on the left side at all behavioral stages, while this occurred (on the left side) in the hypothalamus only when the conditioned reflex was unfixed, while after fixation of the reflex and provision of 30% reinforcement, shorter latent periods were seen on the right side. It is concluded that the high level of left-sided correlation of evoked potentials in the hypothalamus was associated with the motivational and motor components of purposive behavior and was not associated with the emotional tension of the animals provoked by the disruption of the food reinforcement stereotype.
G L Vanetsian; I V Pavlova
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Neuroscience and behavioral physiology     Volume:  34     ISSN:  0097-0549     ISO Abbreviation:  Neurosci. Behav. Physiol.     Publication Date:  2004 Sep 
Date Detail:
Created Date:  2004-11-05     Completed Date:  2005-01-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0330471     Medline TA:  Neurosci Behav Physiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  703-10     Citation Subset:  IM    
Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow.
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MeSH Terms
Acoustic Stimulation / methods
Conditioning, Operant / physiology*
Evoked Potentials, Auditory / physiology
Frontal Lobe / physiology*
Functional Laterality / physiology*
Hypothalamic Area, Lateral / physiology*
Reaction Time / physiology
Reflex / physiology*
Reinforcement (Psychology)

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