Psychological Effects of Alcohol; An Experimental Investigation of the Effects of Moderate Doses of Ethyl Alcohol on a Related Group of Neuro-Muscular Processes in Man
This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1915 edition. Excerpt: ...always occasioned a sharply localized, superficial pricking sensation. The ordinary deep sensibility quality seemed to resemble that of a slight, involuntary muscle-twitch. The apparent location of this sensation, as reported by our subjects, was not necessarily at the point of application of the electrodes, but usually at some more or less remote point, often just above or between the fingers. Changes in the apparent position of the sensation occasioned some disturbance. It seems clear that the sensation quality of threshold electrical stimulation differs from that of more intense electrical stimulation. It was noticed that even threshold stimulation seemed to produce a different sense quality at different times. It seemed sharper and quicker at some times, duller and slower at others. A further difficulty that we encountered is the variability in the degree of assurance that the sensation is present, which was demanded by different subjects, and by the same subjects at different times. It was not infrequent for a subject to say, "I really felt it before I pressed the signal key, but I was not sure." There are objective evidences of this difference. Dr. Wells kindly served as subject for two days' Martin-threshold experiments, one with alcohol and one without. His introspective notes show that he was aware of his being more easily satisfied of the presence of the sensations on the alcohol day. This is proved to be correct by his records. They show that whereas without alcohol, that is, on the normal day, he never once reported a sensation when there was no stimulus; on the alcohol days such errors were very numerous. Especially in experiments on the effect of drugs, we believe that such differences of critical reliability...
- 189 x 246 x 5mm | 186g
- 01 Apr 2013
- Miami Fl, United States
- black & white illustrations