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Cutaneous Reflex Changes in Development and Aging
J. W. MAGLADERY, M.D.;
R. D. TEASDALL, M.D.;
J. H. FRENCH, M.D.;
E. S. BUSCH, M.D.
Arch Neurol. 1960;3(1):1-9.
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Introduction
As judged by motor responses to a variety of stimuli, humans perform most effectively in early adult life. Although this superiority is most evident in tasks of some complexity, in which judgment or response readiness may be important factors, it is also apparent to some degree in relatively simple voluntary responses to less complicated stimuli.1-7 The stage at which peak performance appears is dependent to some degree on the complexity of the task. In any case, the optimum is reached only after a considerable period of maturation, and is succeeded by progressive functional decline throughout the remaining years. The physiological mechanisms involved in these slowed total motor responses of the very young and of the elderly, as compared with adults in their prime, remain obscure.
Objective indices of senescence, apart from the results of disease, in receptor end-organs of vision, hearing or somesthesis have been few and equivocal.8
. . . [Full Text PDF of this Article]
Author Affiliations
Baltimore
From the Division of Neurological Medicine, The Johns Hopkins University School of Medicine and Hospital and The Baltimore City Hospitals.
Footnotes
Received for publication April 8, 1960.
Senior Clinical Trainees in Pediatric Neurology, N.I.N.D.B. (Dr. French and Dr. Busch).
Presented in part at the 84th Annual Meeting of the American Neurological Association, Atlantic City, June 15, 1959.
Supported by a grant (B-367) from the National Institute of Neurological Diseases and Blindness, U.S. Public Health Service.
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