Diseases of the nervous system / edited by Archibald Church.

Date:
1908
Catalogue details

Licence: In copyright

Credit: Diseases of the nervous system / edited by Archibald Church. Source: Wellcome Collection.

    46/1256 (page 18)
    the lenticulo-striate, the knee portion, the lenticulo-optic, and the retro- lenticular part. Not to enter minutely into the exact division of the fibers, it need only be stated that the pyramidal tract, which is the most important and the only direct means of communication between the cerebral cortex and the spinal cord, runs in the anterior half of the lenticulo-optical portion, therefore in the posterior peduncle of the internal capsule. Starting at the knee we pass to the beginning of the posterior third of the lenticulo-optic divi- sion, therefore the irritative points in the various groups of muscles of the body (which we have chiefly learned to recognize by the studies of Beevor and Horsley in anthropomorphic apes) are situated in this area, from before Movement y Eyes to the opposite side x Eyes to the same side Mouth to the opposite side ^ Head to the same side Tongue Retraction of the mouth f Shoulder Elbow ~ — Wrist Fingers Thumb Trunk Hip Region of the root of foot , N Knee Ns> Hallux ' Toes Fig. 11. Arrangement of the Motor Fibers in the Anterior Capsule. (After Beevor and Horsley.) backward, for the head, arm and leg. Uniting with the latter in the posterior third of the lenticulo-optic division is the sensory or lemniscus tract, and dorsally from this, in the retro-lenticular division of the internal capsule, the optic radiations of Gratiolet which pass to the occipital lobes. For this rea-