Two experiments investigated the effect of shock intensity on escape learning in a straight alley (Exp. I) or avoidance learning in a one-way shuttle box (Exp. II) in operated control (OC) rats or rats under bilateral spreading depression (BSD). Results of Exp. I using 0.6-, 1.2-, and 2.4-ma. shock indicated no interaction of shock level with cortical treatment and that BSD Ss were inferior to OC Ss. A low level of shock resulted in poorer performance than intense shock. Results of Exp. II using 0.4- and 2.0-ma. shock indicated a shock by cortical treatment interaction. 0.4-ma. BSD Ss were inferior in latency to 2.0-ma. BSD Ss and 0.4-ma. OC Ss.
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References
1.
BuresJ.Reversible decortication and behavior. In BrazierM. A. B. (Ed.), Second conference on the central nervous system and behavior. New York: Josiah Macy, Jr., Foundation, 1959. Pp. 207–234.
2.
MoyerK. E.KornJ. H.Effect of UCS intensity on the acquisition and extinction of an avoidance response. J. exp. Psychol., 1964, 67, 352–359.
3.
ThompsonR. W.Transfer of avoidance learning between normal and functionally decorticate states. J. comp. physiol. Psychol., 1964, 57, 321–325.
4.
TrapoldM. A.FowlerH.Instrumental escape performance as a function of intensity of noxious stimulus. J. exp. Psychol., 1960, 60, 323–326.
