Un guide de référence des sciences médicales, qui englobe l'ensemble des connaissances scientifiques et pratiques de la médecine et des sciences connexes et à l'occasion indiquer rs . Les mouvements irréguliers du pied et la jambe,ff ; de l'épaule et la poitrine, s ; de pouce et les doigts, h. Dans seulement l'homme et les grands singes sont plus paralyzesentirely permanente, les effets étant moins et lessmarked pendant que nous allons vers le bas dans l'échelle biologique. Associés à la perte de la capacité de prendre 403 Cerveau, Pbysiology GUIDE DE RÉFÉRENCE DE LA FACULTÉ DES SCIENCES MÉDICALES DE certains mouvements après la destruction de certaines parties de l'thebrain, d'autres effets secondaires de

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A reference handbook of the medical sciences, embracing the entire range of scientific and practical medicine and allied science . rs indicate occasional and irregular movements of foot and leg, ff; of shoulder and chest, s; of thumb and fingers, h. In only man and the higher apes are the paralysesentirely permanent, the effects being less and lessmarked as we go downward in the biological scale. Associated with the loss of the ability to make 403 Brain, Pbysiology of REFERENCE HANDBOOK OF THE MEDICAL SCIENCES certain movements after destructions of parts of thebrain, other secondary effects of these lesions are tobe noted. At first the paralyzed part can be movedby external agents, but some time after the beginningof a paralysis the part which cannot be moved volun-tarily becomes rigid and a contracture results. Thiscontracture phenomenon is found only in man andthe higher apes. A satisfactory explanation of thecause of the condition has not been advanced, and, in fact, there may be several factors operating indifferent individuals or in an individual at one time.Probablv the most common factor is the loss of tone. A B FlQ. 1040.—The Production of Cortical Epilepsy. (FromSchafer.) Curves from a dogs muscle following strong stimulationof the cortex (A) and of the subjacent corona radiata (B). E-E, Periods of e-xcitation; T, tonic contraction during period of stimula-tion; Ep, epileptiform contractions after the cessation of stimula-tion of Cortes; O, absence of contraction after cessation of stimula-tion of corona radiata. in the muscles affected and the overpowering effectof the antagonists, for where the muscles are equallyaffected, as in lesions of the peripheral nerves, thiscondition is not found. Movement and the Occipital Lobes.—Electricalstimulation of the occipital cortex results in move-ments of the eyeballs and of the intrinsic eye muscles.The eyeball movements are associated movementsand of a more complex nature than similar onesfollowing stimulation of

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