[Cytoarchitectonic localization of foci of electrocortical activity accompanying focused attention in cats].
Beta electrocorticographic rhythms (30-45 Hz) develop during focused immobile attention within two distinct foci in cats. A multiple electrode exploration was performed, followed by post-mortem histological analysis, to determine the precise localization of these foci. Electrode tips recording beta rhythms in the waking attentive cat were located: in motor areas (Brodmann's areas 4 and 6), in a band extending from the postcruciate cortex to the walls of the presylvian sulcus, crossing the frontal pole (anterior beta focus); in the posterior parietal associative area 5a, along the divisions of the ansate sulcus (posterior beta focus). The two foci are separated by somatic areas 3, 2 and 1, where beta rhythms were never recorded. The location of the posterior focus may suggest that area 5 is, in the cat as it is in the monkey, involved in motor control.
D000818:Animals; D001288:Attention / Q000502:physiology*; D001611:Beta Rhythm; D002415:Cats; D002540:Cerebral Cortex / Q000033:anatomy & histology / Q000502:physiology*; D004569:Electroencephalography; D011235:Predatory Behavior / Q000502:physiology
Délimitation cytoarchitectonique des foyers d'activité électrocorticale accompagnant l'attention focalisée chez le chat.