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Projections from the cerebral cortex to intralaminar nuclei in monkey
Author(s) -
Devito June L.
Publication year - 1969
Publication title -
journal of comparative neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.855
H-Index - 209
eISSN - 1096-9861
pISSN - 0021-9967
DOI - 10.1002/cne.901360206
Subject(s) - anatomy , biology , premotor cortex , cortex (anatomy) , efferent , neuroscience , cerebral cortex , central sulcus , neocortex , motor cortex , thalamus , afferent , dorsum , stimulation
The distribution of degenerating fibers within the intralaminar nuclei was studied following lesions of the cerebral neocortex in Macaca mulatta, M. nemestrima, M. irus, Cercopithecus aethiops sabaeus and Saimiri sciureus. Degenerating fibers were revealed by the Nauta silver method. The cortex rostral to the central sulcus appeared to be the principal source of cortical fibers projecting to intralaminar nuclei. Very few degenerating fibers were observed in intralaminar nuclei following parietal, temporal or occipital lobe lesions. Efferent fibers of the prefrontal lobe terminated predominantly in paracentral and parafascicular nuclei. Premotor cortex projected mainly to central lateral and parafascicular nuclei. Motor cortex projected to central lateral and centromedian nuclei. The projection from motor cortex to the ventrolateral centromedian nucleus was topographically distributed, with fibers from leg area terminating lateral to those from arm area.