On Certain Electrical Processes In The Human Body And Their Relation To Emotional Reactions - Tapa blanda

Lyman Wells, Frederic

9781408636688: On Certain Electrical Processes In The Human Body And Their Relation To Emotional Reactions

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ISBN 10: 1408636689 ISBN 13: 9781408636688

Editorial: Read Books, 2008

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THIS report deals with experiments conducted to develop the best available method of applying the so-called psycho-galvanic reflex1 to the study of the emotional reactions both in normal individuals and various forms of psychoses. The work is divided into three parts, as follows 1 the investigation of the physiological causes of the galvanometric deflections 2 the study of sources of error in their use arising from physical causes, and of the methods of eliminating them 3 the testing of the value of the deflections as indicators of emotion by statistical comparison with the introfipective estimates and supplementarily, the application of the method of inquiry to the study of nervous and mental disorders. Most of the time at our disposal was devoted to the first three portions of the problem, and the few experiments with patients were carried on rather with a view to testing the methods of application than with the hope of securing any notable psychological information. The apparatus at the beginning of the experiments consisted of a a Leeds and Northrup, Type H, DIArsonval galvanometer, sensitivity 38 X 10-l0 ampkres, b the Ayrton shunt, c non-polarizable electrodes of the calomel type, d the Gordon cell, where an outside current is used. The deflections are read direct from a milli meter scale, 2 m. distant from the galvanometer m i r r r . Th e elec-The material here presented was collected almost entirely during the time between October 1 and December 1, 1909. For this reason the observations consist largely of single experiments, which seem to the writers, however, to reflect with comparative accuracy the properties of the method under consideration. In view of present conditions in the problem, their publication seems justified cf. Dunlap, Psych. The second named writer is mainly responsible for the work up to p. 26 and from this point the first named. Values are uniformly given in terms of mm. deflections. With the galvanometer at full sensibility, the current is 19 X 10-l0 ampere per mm. of deflection when cell-current is used, the current is 1900 X 10- ampere per mm. of deflection unless otherwise specified. 1 2 ELECTRICAL PROCEBSES IN THE HUMAN BODY trodes were constructed of glass tubes shaped like ordinary test tubes, 3 cm. inside diameter, 15 cm. long, with the conducting wires sealed in the bottom point of each. These were fitted into holes in a pair of horizontal boards on each side of a massage table. The subject reclined on this table with the hands strapped to the boards, palms down, with the middle finger protruding downward in the holes, each being immersed in the fluid to a depth of between 4 and 5 cm. The straps were drawn tight enough to limit the motions of the hands to a small range. Moreover, the position was comfortable and there was no tendency to move the hands during the experiments...

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