. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. M. R. COVIAN, C. TIMO-IARIA AND R. F. MARSEILLAN 439 very high voltage reticiUar stimulation (<S volts) was used did both waves disappear, as shown in Figs. 9 and 10 in superimposed sweeps at 100 and 50 msec, interval. Control cxpcriiiiciits. The possibility of spreading current to the medial lemniscus was ruled out by the following experiment: a concentric electrode was placed on the medial lenniiscus at co-ordinates As, L5, H3. Its stimulation determined an evoked potential in the cerebral 2v
. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. M. R. COVIAN, C. TIMO-IARIA AND R. F. MARSEILLAN 439 very high voltage reticiUar stimulation (<S volts) was used did both waves disappear, as shown in Figs. 9 and 10 in superimposed sweeps at 100 and 50 msec, interval. Control cxpcriiiiciits. The possibility of spreading current to the medial lemniscus was ruled out by the following experiment: a concentric electrode was placed on the medial lenniiscus at co-ordinates As, L5, H3. Its stimulation determined an evoked potential in the cerebral 2v 3v 5v Fig. 8 Voltage series at 50 msec, interval. Time 200 cps. Calibration: 500 liV. While the evoked potential in somatosensory area was being recorded by stimulation of the forepaw in the usual way, electrolytic lesions were made by a 5 mA direct current until the evoked potential disappeared. At this point the stimulation of the medial lemniscus did not evoke any potential in the cerebral cortex, but the stimulation of the brain stem reticular formation at co-ordinates A3, , H2 evoked a cortical pcnential as before. This evoked potential by single shock reticular stimulation was very similar to that obtained in the same conditions by Buser and Borenstein. 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-. Springfield, Ill. , Thomas
Size: 1973px × 1267px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, booksubjectlearnin, booksubjectpsychophysiology
