. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. 3 BRAIN. the basal Iriatum and •The corpus IS being an extra-ven- "mm \ of cerebral gan- letween occipital ; 5, coDTolntlons 7, lenticnlar nu- 10, external cap- THE BRAIN. BOB Between these lies the internal capsule, through which pasH fibers that spread out toward the cortex, as the wrona ntdiata. Pathology, especially, has shown that a lesion of the intra- ventricular port
. A text-book of comparative physiology [microform] : for students and practitioners of comparative (veterinary) medicine. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. 3 BRAIN. the basal Iriatum and •The corpus IS being an extra-ven- "mm \ of cerebral gan- letween occipital ; 5, coDTolntlons 7, lenticnlar nu- 10, external cap- THE BRAIN. BOB Between these lies the internal capsule, through which pasH fibers that spread out toward the cortex, as the wrona ntdiata. Pathology, especially, has shown that a lesion of the intra- ventricular portion of the corpus striatum, and, above all, of the internal capsule, is foUowed by failure of voluntary move- ment (akinesia). It would appear that a great part of the fibers from the motor area around the fissure of Rolando, pass through the intra-ventrioular parts of the corpus striatum, and especially its internal capsule. But it is also to be borne in mind that a large part of the fibers passing from the cortex make connection with the cells of the corpus striatum before reaching the cord. These facts render the occurrence of loss of voluntary motor power comprehensible. ' The fibers of the peduncles of the brain may be divided into an interior or lower division (ertuta), going mostly to the. Fio. 88*.—TnuMveneMction of hninan bnia (after Dalton). Thiaand thepNoeding Sgnre are aomewliat diaaraminatie. 1, pmia Varolii; 8,8, cmra cerelirf; 8,8, in- ternal capanle; 4,4, corona radiata; 6, optic thaiamns; «, lenticular nucieaa; 7, corpna calloaam. " corpus striatum, and a posterior division {tegmentum), passing principally to the optic thalami; many, possibly most of them, ultimately reach the cortex. Many clinical observers do not hesitate to speak of the optic thalamus as sensory in Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustration
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