UNILATERAL MEDIAL FOREBRAIN-BUNDLE ACTIVATION SELECTIVELY ENHANCES CONDITIONED ORIENTING HEAD TURNS AND IPSILATERAL CINGULATE CORTEX EVOKEDFIELD RESPONSES IN CATS

Citation
M. Penttonen et al., UNILATERAL MEDIAL FOREBRAIN-BUNDLE ACTIVATION SELECTIVELY ENHANCES CONDITIONED ORIENTING HEAD TURNS AND IPSILATERAL CINGULATE CORTEX EVOKEDFIELD RESPONSES IN CATS, Psychobiology, 22(1), 1994, pp. 22-30
Citations number
38
Categorie Soggetti
Psychology
Journal title
ISSN journal
08896313
Volume
22
Issue
1
Year of publication
1994
Pages
22 - 30
Database
ISI
SICI code
0889-6313(1994)22:1<22:UMFASE>2.0.ZU;2-K
Abstract
Effects of a unilateral medial forebrain bundle (MFB) stimulation unco nditioned stimulus (US) on conditioned head turn and bilateral cingula te cortex field potentials were studied in cats. Conditioned stimuli ( CSs) of different frequences were given randomly to either ear. The CS + was followed by the US, and the CS- was presented alone. Before cond itioning most cats predominantly turned toward the ear to which the CS s were presented, whereas after conditioning the head turns were in on e direction, most prominently contralateral to the US. Negative field potentials were greater in the cingulate cortex ipsilateral to the US than in the cingulate cortex contralateral to the US. Cross correlatio ns indicated similarities between the waveforms recorded for the CS an d the US within each cingulate cortex, but differences between the two sides of the cingulate cortex. It is suggested that the unilateral MF B system has brain side specific effects on conditioned orienting head turns and cingulate cortex neuronal activity.