Polysensory averaged evoked potentials were evaluated as a function of the interval between a flash and a click which followed it at intervals ranging from 20—120 msec. This was done in two experimental series in each of which the subject's task was to respond manually to the flash. One of these required a choice reaction, namely, withholding of motor response when click was occasionally presented alone.
Both evoked potential amplitude and reaction times showed a linear relationship to interstimulus interval; at shorter intervals, the amplitude of the polysensory evoked response was higher and reaction times were faster.
Topographical analysis indicated that the electrophysiological findings were more consistently obtained in recordings from transverse bipolar leads than from pairs in the anterior-posterior plane. Responses recorded from the left motor region (contralateral to the arm employed in the manual response) showed the effect more consistently than did those from the homotopic recording site on the right motor cortex.
Ratios were calculated between the amplitude of the obtained polysensory evoked responses and a theoretical one expected by algebraic addition of the responses to the two stimuli as presented singly. It was found that ratios were consistently higher for the left motor region when compared to the right. Only at the left was there a reliable relationship between interstimulus interval and the calculated ratio, with values greater than one at short interstimulus intervals and a linear decrement in the ratio value as interstimulus interval lengthened.
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Bignal, K.E.: Effects of subcortical ablations on polysensory cortical responses and interactions in the cat. Exp. Neurol. 18, 56–67 (1967).
Brazier, M.A.B.: Paired sensory modality stimulation studied by computer analysis. In: Pavlovian Conference. Ann. N.Y. Acad. Sci. 1054–1063 (1961).
Buser, P., P. Ascher, J. Bruner, D. Jassik-Gerschenfeld and R. Sindberg: Aspects of sensorimotor reverberation to acoustic and visual stimuli: the role of primary specific cortical areas. Brain Mechanisms 1, 294–324 (1963).
—, and M. Imbert: Sensory projections to the motor cortex in cats: a microelectrode study. In: Sensory Communication, pp. 607–624. Ed. by W.A. Rosenblith. New York: M.I.T. Press and John Wiley & Sons, Inc. 1959.
Cigánek, L.: Evoked potentials in man: interaction of sound and light. Electroenceph. clin. Neurophysiol. 21, 29–33 (1966).
Davis, R.: The role of “attention” in the psychological refractory period. Quart. J. exp. Psychol. 11, 211–220 (1959).
Dorfman, D.D., and R. Miller: Some effects of light on sound intensity generalization. Psychon. Sci. 3, 437–438 (1965).
Evarts, E.V.: Pyramidal tract activity associated with a conditioned hand movement in the monkey. J. Neurophysiol. 29, 1011–1027 (1966).
Fessard, A.: The role of neuronal networks in sensory communications with the brain. In: Sensory Communication, pp. 585–606. Ed. by W.A. Rosenblith. New York: M.I.T. Press and John Wiley & Sons, Inc. 1961.
Gilden, L., H.G. Vaughan Jr. and L.D. Costa: Summated human EEG potentials with voluntary movement. Electroenceph. clin. Neurophysiol. 20, 433–438 (1966).
Jung, R., H.H. Kornhuber and J.S. Da Fonseca: Multisensory convergence on cortical neurons: neuronal effects of visual, acoustic and vestibular stimuli in the superior convolutions of the cat's cortex. Brain Mechanisms. Progr. Brain Res. 1, 207–240 (1963).
Kornhuber, H.H., u. L. Deecke: Hirnpotentialänderungen bei Willkürbewegungen und passiven Bewegungen des Menschen: Bereitschaftspotential und reafferente Potentiale. Pflügers. Arch. ges. Physiol. 284, 1–17 (1965).
Morrell, F.: Electricals signs of sensory coding. In: The Neurosciences: A Study Program, pp. 452–469. Ed. by G.S. Quarton, T. Melnechuk, F.O. Schmitt. New York: The Rockefeller Univ. Press. 1967 a.
Morrell, L.: Intersensory facilitation of reaction time. Psychon. Sci. 8, 77–78 (1967b).
Morrell, L.K.: Temporal characteristics of sensory interaction in choice reaction times. J. exp. Psychol. (1968) (in press).
Rosenblith, W.A. (ed.): Sensory Communication, pp. 815–824. Contributions to the symposium on principles of sensory communication, 1959, New York: M.I.T. Press and John Wiley & Sons, Inc. 1961.
Taylor, W.L., and C. Fong: Some contributions to average rank correlation methods and to the distribution of the average rank correlation coefficient. J. Amer. Statist. Ass. 58, 756–769 (1963).
Wall, P., A. Rémond and R. Dobson: Studies on the mechanism of the action of visual afferences on motor cortex excitability. EEG clin. Neurophysiol. 5, 385–393 (1953).
Walter, W.G.: The convergence and interaction of visual, auditory, and tactile in human nonspecific cortex. In: Sensory Evoked Response in Man. Ann. N. Y. Acad. Sci. 112, 320–361 (1964).
White, C.T., and R.G. Eason: Evoked cortical potentials in relation to certain aspects of visual perception. Amer. Psychological Assn., Inc. (ed. Gregory A. Kimble) Psychological Monographs, No. 632, 80, 1–14 (1966).
Woodworth, R.S.: Experimental psychology. N. Y., Henry Holt & Co., p. 889 (1938).
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Morrell, L.K. Sensory interaction: Evoked potential observations in man. Exp Brain Res 6, 146–155 (1968). https://doi.org/10.1007/BF00239168
- Evoked potential
- Reaction time