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NUCLEUS OPTICUS* AND CAUDATUS W. S. McCULLOCH From the Laboratory of NeurophysioZogy, (Received for publication, Yale University June 1, 1938) School of Medicine INTRODUCTION SEVERAL anatomists (Cajal,l Marinesco,lo Minkowksi,â Kariya, 8 Hirasawa and Kariya7) have described corticostriatal neurons, originating in the cortex. Nevertheless the present tendency in neuroanatomy and neurology is to ignore these findings and to maintain that the cerebral cortex does not directly influence the activity of the striatum, an opinion understandable in the absence of physiological evidence of a directed functional relation from cortex to striatum. In this paper? direct experimental evidence for such a functional relation is presented. It will be shown: (i) that two specific areas of the namely the areas L.4-s and A.4-s$ influence the activity of one of the constituent portions of the striatum, viz., the nucleus caudatus, (ii) that these areas L.4-s and A.4 -s via this nucleus influence the activity of the , and (iii) that these areas via nucleus caudatus and influence the activity of two other areas, viz., the leg-and arm-portions of area 4 (L.4 and A.4) of the cortex. In other words, in this paper will be demonstrated by physiological methods the existence and operation of
Journal of Neurophysiology – The American Physiological Society
Published: Jul 1, 1938
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