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A. J. McLEAN, M.D.

Arch Neurol Psychiatry. 1927;17(3):285-302.

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

At present there is no direct clean-cut anatomic proof that the third, fourth and sixth pairs of cranial nerves are other than purely motor, and anatomic textbooks continue to speak of them only in this way. Anatomically, the inference that they carry kinesthetic sensibility as well is almost overwhelming, but the actual proof is not complete; physiologically, however, it may be regarded as proved.

The anatomic inference that these nerves mediate kinesthetic sense is based largely on the presence of neuromuscular and neurotendinous spindles ¹ in the tendinous attachments and bellies of the extra-ocular eye muscles. In other portions of the body, these spindles have been shown ² to be terminations of about two fifths of the fibers which run in "motor" nerves, the cells of origin of which are in posterior root ganglia. On the physiologic side, Sherrington ³ has published ingenious and incontrovertible proof that kinesthetic sense is . . . [Full Text PDF of this Article]

Author Affiliations
BOSTON

From the Anatomical Laboratory, Johns Hopkins University.

Footnotes
A preliminary report on this subject appeared in Proc. Soc. Exper. Biol. & Med. 23:658, 1926.