Pathways of non-specific thalamo-cortical projection system

Electroencephalography and Clinical NeurophysiologyPublished 1 January 1954

John W. Hanbery, C. Ajmone-Marsan, Margaret Dilworth

Citations119

TL;DR

The pathways of the non-specific thalamo-cortical projection system, in the cat, are independent of the specific thalamic nuclei and the striatum, and transcorticals transmission was not found to be an important factor in the distribution of non- Specific thalamospecific responses.

Abstract

1. The pathways of the non-specific thalamo-cortical projection system, in the cat, are independent of the specific thalamic nuclei and the striatum. 2. The non-specific pathways pass forward to the oral pole of the thalamus where there is a topographical organization, with the ventro-medial portion related to anterior and the dorso-lateral portion to posterior cortical responses. 3. The final neurons in this multi-synaptic thalamic pathway probably lie in the nucleus reticularis and pass in a topographical manner through the internal capsule directly to various cortical areas. 4. Transcortical transmission was not found to be an important factor in the distribution of non-specific thalamo-cortical responses.

Keywords

Medicine

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260 Citations1951T. E. Starzl, H. W. Magoun

The results suggest that the diffuse projection system is organized for mass thalamic influence upon associational cortex.

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238 Citations1949Jerzy E. Rose, Clinton N. Woolsey

The available data concordantly suggest that the mammalian thalamus consists of three divisions different from each other in their phylogenetic and ontogenetic development and in their relations to the cortex.

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81 Citations1932W. E. Le Gross Clarck

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79 Citations1952T.P.S. Powell

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63 Citations1945Jack G. Sheps

The plan is to use suitable pathological material as a substitute for the experimental data available for subhuman studies, and to check such findings against normal preparations to provide a better understanding of the more detailed connections of the normal human thalamus.

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Evidence is revealed suggesting that none of the intralaminar nuclei and the reticular nucleus, which have been postulated to make up such a diffuse thalamo-cortical projection system, possesses a direct diffuse projection to neocortex.

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27 Citations1940W. E. Le Gros Clark, Duncan S. Russell

Since in the present case the pathological condition has led to a destruction of the cortex while the basal ganglia have been left intact, it also permits of a differentiation between thalamo-cortical connections, and possible thalamostriate connections which may exist in respect of some of the nuclear elements of the thalamus.

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