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Projection From the Arm Area of the Baboon's Motor Cortex

C. G. Phillips

Arch Neurol. 1967;17(2):188-195.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

THE CORTICOFUGAL pyramidal cells, which are the "common paths"¹ of cortical integration, are the key to the organization of the motor cortex (Msl of Woolsey²). They form the output channel of a complex input-output system, whose input side, as yet, has received less investigation than the output (for a review of recent work, see reference 3). This paper is concerned with one only of the outputs: the corticospinal neurons projecting monosynaptically to motoneurons innervating the baboon's arm, forearm, and hand. These constitute the simplest and most direct of the known corticofugal pathways. In the cat, which has no monosynaptic corticospinal projection,⁴ there are corticospinal projections controlling the interneurons of reflex arcs⁵ and the neurons and presynaptic arborizations of ascending spinal pathways,⁶ and it would be surprising if comparable projections did not exist in the primates. A projection to fusimotor neurons has been found in . . . [Full Text PDF of this Article]

Author Affiliations
Oxford, England

From the University Laboratory of Physiology, University of Oxford, Oxford, England.

Footnotes
Submitted for publication Dec 10, 1966; accepted Dec 12.

Read before the 91st annual meeting of the American Neurological Association, Washington, DC, June 15, 1966.

Reprint requests to University Laboratory of Physiology, University of Oxford, Oxford, England (Dr. Phillips).

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