Circling behavior: ethological analysis and functional considerations.

P V Piazza; M Ferdico; D Russo; G Crescimanno; A Benigno; G Amato

doi:10.1016/0166-4328(89)90008-9

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Circling behavior: ethological analysis and functional considerations.

P V Piazza·M Ferdico·D Russo·G Crescimanno·A Benigno·G Amato

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Abstract

Head-turning and circling movements evoked by substantia nigra (pars compacta) (SNpc) stimulation have been ethologically analyzed in order to attribute a functional meaning to these lateralization processes. It has been shown that these motor acts, separated by a constant interval, may be considered a fixed action pattern. The duration of the single acts depends on the SNpc stimulation parameters: the increase in the stimulus strength produces an increase in the number of turns but does not induce the disappearance of the orientation movement. The body movement is always preceded by the head-movement. Haloperidol administration induces a dose-related increase of the orientation component of the motor pattern. These data together with others in the literature suggest the participation of the SNpc in the mechanism of shift in the focus of attention from one point to another in the contralateral surrounding environment.

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Animals Attention Brain Mapping Cats Corpus Striatum Dominance, Cerebral Dopamine Motor Activity Neural Pathways Orientation Stereotyped Behavior Substantia Nigra Journal Article Research Support, Non-U.S. Gov't

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P V Piazza, M Ferdico, D Russo, G Crescimanno, A Benigno, G Amato. 1989-01-01. Circling behavior: ethological analysis and functional considerations.. https://doi.org/10.1016/0166-4328(89)90008-9

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