. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. 270 BRAIN MECHANISMS AND LEARNING sensory cortex. A detailed report covering cortical evoked potentials in free, inianaesthetized cats is ni preparation (Roig, Segundo, Soninier- Smith and Galeano, to be published): it will indicate that, in 'chronic' cats cortical responses to single subcutaneous shocks consisted (when recorded as described above) in a succession of positive (P) and negative POTENTIAL EVOKED BY SUBCUTANEOUS SHOCK ON CSC. Fig. 3 potential evoked by single subcutaneous shock on contralatera
. Brain mechanisms and learning, a symposium. Psychophysiology; Learning, Psychology of. 270 BRAIN MECHANISMS AND LEARNING sensory cortex. A detailed report covering cortical evoked potentials in free, inianaesthetized cats is ni preparation (Roig, Segundo, Soninier- Smith and Galeano, to be published): it will indicate that, in 'chronic' cats cortical responses to single subcutaneous shocks consisted (when recorded as described above) in a succession of positive (P) and negative POTENTIAL EVOKED BY SUBCUTANEOUS SHOCK ON CSC. Fig. 3 potential evoked by single subcutaneous shock on contralateral sensory cortex: (unless specified otherwise, records from all figures arc from sensory contralateral to peripheral shocks). As recorded with equipment described in text, potentials consisted in a succession of positive (downward deflections P) and negative (upward deflections N) peaks named, according to polarity and chronological order of pre- sentation. Pi, Ni, P2, N2, P3 and N3. Arrow indicates application of subcutaneous shock. Cali- brations: 20 uv., 50 (as in all figures using cathode ray oscilloscope), CSC, contralateral sensory ; SUBCUT., subcutaneous. (N) peaks, tentatively named as follows (Fig. 3): Pi (initial positive spike) was comparable to that encountered regularly but designated variously and ascribed to presynaptic activation in specific terminals (Figs. 3, 6, 8, 9, II, 12). Ni was similar to first part of subsequent negative wave (Figs. 3, 6, 8, 9, 10, II, 12). P2, N2 and P3 constituted a variable sequence exhibiting similarity with 'augmenting' complexes; when N2 was 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, Il
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