Responses of neurones of the pontine nuclei to stimulation of the sensorimotor, visual and auditory cortex of rats

Brain Res Bull. 1978 Jan-Feb;3(1):15-9. doi: 10.1016/0361-9230(78)90056-4.

Abstract

The aim of this study was to investigate the degree of convergence of corticofugal neurones from various cortical areas onto single neurones of the pontine nuclei (PN). Eighty-five% of the PN neurones responded to electrical stimulation of at least one of the following cortical areas: sensorimotor, visual, auditory. Slightly less than half of these neurones displayed a convergent input from two or three of functionally different cortical areas. The sensorimotor cortex, particularly the face areas, provided the most important input to the PN; stimulation of the visual cortex was less effective and stimulation of the auditory cortex rarely excited PN neurones. The electrophysiological results suggest that considerable cross-link exists between the anatomically defined cortico-pontine projection columns.

MeSH terms

  • Animals
  • Auditory Cortex / physiology*
  • Efferent Pathways / physiology
  • Evoked Potentials
  • Neural Conduction
  • Neurons / physiology
  • Pons / cytology
  • Pons / physiology*
  • Rats
  • Reaction Time
  • Somatosensory Cortex / physiology*
  • Visual Cortex / physiology*