title: [Neuronal spike responses to visual stimuli in the hyperstriatal region of the brains of Corvus corone crows].
abstract: Studies of impulse activity in 452 neurons of the hyperstriatal part of the forebrain in crows revealed visual projectional zone within Wulst. With deepening of microelectrode, the receptive fields shifted upward and increased in the diameter from 3--4 to 30--50 and even 90 degrees; the relative amount of directionally sensitive neurons with the preferred movement of the stimuli backward and upward increased. In rostral regions, neurons with the receptive fields in temporal areas of the visual field are located, whereas nasal areas are projected to caudal parts of the Wulst. Selectivity of neuronal reactions to changes in illumination, the size and the rate of movement of the stimuli, as well as neuronal sensitivity to repeated stimulation were demonstrated.
mesh_terms: D000818:Animals; D001717:Birds / Q000502:physiology*; D001931:Brain Mapping; D004594:Electrophysiology; D009039:Motion Perception / Q000502:physiology*; D014795:Visual Pathways / Q000502:physiology*; D014796:Visual Perception / Q000502:physiology*
vernacular_title: Impul'snye reaktsii neĭronov giperstriatal'nogo otdela mozga voron Corvus corone na zritel'nye stimuly