. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. 5fi8 ANIMAL PHTSIOLOOY. the importance of sensations derived both from the skin and the muscles for co-ordination of muscular movements. In locomotor ataxy, in which the power of muscular co- ordination is lost to a large extent, the lesions are in the pos- terior columns of the spinal c
. A text-book of animal physiology [microform] : with introductory chapters on general biology and a full treatment of reproduction, for students of human and comparative (veterinary) medicine and of general biology. Physiology, Comparative; Veterinary physiology; Physiologie comparée; Physiologie vétérinaire. 5fi8 ANIMAL PHTSIOLOOY. the importance of sensations derived both from the skin and the muscles for co-ordination of muscular movements. In locomotor ataxy, in which the power of muscular co- ordination is lost to a large extent, the lesions are in the pos- terior columns of the spinal cord, or the posterior roots of the nerves, or both, and these are the parts involved in the trans- mission of afferent impulses. Whether the muscular sense also implies a central" neural" sense, or consciousness of the changes of central origin, associ-. ated with the execution of a movement as distinct from the impressions derived from the muscles, is a matter of dispute. But the student will be already prepared for our answer to this question. The evidence of experiment seems to point to a dis- tinct source of information in the muscles. We would take along with this the additional data of sense afforded by the skin, the "sense of effort" and other factors, as stored past experi- ence, which must be very variable for the individual, as any one may observe by watching the muscular efforts of others and himself. OompuratiTe.—The more closely the higher vertebrates are observed, the more convinced does one become that those sen- sory judgments, based upon the information derived from the skin and muscles, which they are constantly called upon to form are in extent, variety, and perfection scarcely if at all surpassed by those of man. Of course, a sensory judgment in man, with his excessive cerebral development, may by associations in his experience be worked up into elaborate judgments impossible to the brutes, but we now refer to the judgments of sense
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Keywords: ., bookauthormillswes, bookcentury1800, bookdecade1880, bookyear1889
