. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. 6i6 BRAIN MECHANISMS AND LEARNING signihcancc to the stimulus. If this darkness-flicker association was pro- longed for a time without modifications, they once again lost interest in the stimulus, their attention decreasing accordingly (rehabituation).. I I I I I I I I I I I I I I I I i I i I I I i 5 5 7 9 11 {? 15 1? ^? 21 25 25 ?? ?9 ?1 TRIALS (DfS) Fig. 7 Cliain;cs of the risiial evoked rdipome by effect of diicoiiliniioiis flicker st'uniiLitioii. Ordinates, percentage of initial peak to peak amplitude
. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. 6i6 BRAIN MECHANISMS AND LEARNING signihcancc to the stimulus. If this darkness-flicker association was pro- longed for a time without modifications, they once again lost interest in the stimulus, their attention decreasing accordingly (rehabituation).. I I I I I I I I I I I I I I I I i I i I I I i 5 5 7 9 11 {? 15 1? ^? 21 25 25 ?? ?9 ?1 TRIALS (DfS) Fig. 7 Cliain;cs of the risiial evoked rdipome by effect of diicoiiliniioiis flicker st'uniiLitioii. Ordinates, percentage of initial peak to peak amplitude of the evoked response. Abscissas, trials carried out every 20 seconds with discontinuous flicker stimulation (DFS) at 2/scc. for 20 seconds. Lead 02-right mastoid. Stroboscope at a distance of 3 m. from the retina. Eyes open. Two experiments carried out in different subjects who had had no previous knowledge of the conditions of the test, are plotted. The temporal course of changes in experiment number 21 (white dots) is faster than the one of experiment 26 (black dots). In experiment 21 the ampli- tude increases quickly and reaches its highest value in the 5th trial. After the 13 th trial it begins to decrease regularly. In experiment 26, the amplitude increases slowly and retains high values until the end of the test at the 31st trial. INTERACTION BETWEEN THE DISCONTINUOUS FLICKER STIMULATION AND A TONE The association ot a sound in the period ot darkness during the discon- tinuous flicker also provoked modifications in the response. When after the establishment of habituation to the discontinuous flicker an intense and. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Council for International Organizations of Medical Sciences; Fessard, A. (Alfred); Delafresnaye, J. F. (Jean Francisque), 1919-. Springfiel
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Keywords: ., bookcentury1900, booksubjectlearnin, booksubjectpsychophysiology
