REPRESENTATION IN THE CEREBRAL CORTEX OF A PRIMITIVE MAMMAL: SENSORIMOTOR, VISUAL, AND AUDITORY FIELDS IN THE ECHIDNA (TACHYGLOSSUS ACULEATUS)

Publisher Website
Google Scholar
Abstract
Sensory and motor areas in the cerebral cortex of the echidna (Tachyglossus aculeatus) were mapped with the evoked potential technique and by cortical stimulation. The sensorimotor, visual and auditory fields are located adjacent to each other over the wide posterior portion of the lateral surface of the hemisphere. They are situated so that the visual field is dorsal, the sensorimotor field ventral and the auditory field posterior. There are two somatic motor areas with equivalent thresholds of excitation; one overlies the somatic sensory area and conforms to its somatotopic pattern which is of the established mammalian form; the other is in the gyrus ahead of the somatic sensory area and is without a comparable sensory counterpart.

This publication has 3 references indexed in Scilit: