Influence of the Cerebral Cortex on the Cuneate Nucleus of the Monkey
Influence of the Cerebral Cortex on the Cuneate Nucleus of the Monkey
复制标题
大脑皮层对猴楔形核的影响
作者：
F. Harris;S. Jabbur;R. W. Morse;A. Towe
NEARLY all neurones in the dorsal column nuclei of the cat are either excited or inhibited by stimulation of the pericruciate cortex1–3, the excitation being carried entirely by the pyramidal tract, while inhibition involves an additional route2,3. The cortically excited neurones occupy deep and rostral sites in the dorsal column nuclei, near the pyramidal terminations4,5, while the cortically inhibited neurones are found more superficially. The latter, usually hair-sensitive neurones, possess peripheral inhibitory surrounds6; they may be identified with the cluster neurones, receiving large synaptic terminals7. The former are more often touch-sensitive or pressure-sensitive neurones possessing peripheral facilitatory surrounds6. Thus, neurones excited from one region of cortex are similarly excited from other cortical regions, ipsilateral and contralateral; the same rule holds for inhibition1,2. Few neurones have been observed with both types of cortical influence or with no cortical influence whatever.
