Transfer of learned discrimination from peripheral to central auditory stimulation in cats

Colavita, Francis B.

doi:10.3758/bf03327734

Cited by 2 publications

(2 citation statements)

References 8 publications

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“…The finding that stimulation of two nonreticular sites failed to improve flicker discrimination accuracy in spite of the fact that stimulation of at least one of these structures is known to act as a salient cue (Colavita, 1973) suggests that MRF stimulation did not improve discrimination accuracy by acting as a salient cue. These findings also suggest that the effect was anatomically specific to stimulation of the MRF.…”

Section: Resultsmentioning

confidence: 98%

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Facilitation of flicker discriminability by electrical stimulation of the mesencephalic reticular formation of the rat.

Hoyman¹,

Kelsey²

1977

Journal of Comparative and Physiological Psychology

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Low-intensity, 7 and 10 /xA, electrical stimulation of the mesencephalic reticular formation (MRF) in seven rats significantly improved the accuracy of a perceptually difficult successive discrimination between a smooth light and a rapidly flickering light. Despite similar baseline conditions, including accuracy, MRF stimulation did not affect accuracy when the flickering light was maintained at an easily detectable 5 Hz. Accuracy of the perceptually difficult discrimination was not affected by changes in water deprivation or by electrical stimulation of the inferior colliculus or the fornical area of the limbic system. These findings suggest that the stimulation-induced improvement in the accuracy of the perceptually difficult flicker discrimination was not due to nonspecific changes in motivation, arousal, or general attention or to the possible cue or alerting function of the stimulation. The failure to implicate nonsensory processes and the finding that accuracy was improved only when the light was flickering rapidly indicate that MRF stimulation increased accuracy by improving the discriminability of the rapidly flickering light.Behavioral and electrophysiological evi-arousal has been extensively examined dence implicating the mesencephalic retic-since that time (e.g., Isaac, 1960; Vierck, ular formation (MRF) in the modulation of 1965); however, the equally promising hyboth arousal (Lindsley, Schreiner, pothesis that the MRF also modulates sen-Knowles, & Magoun, 1950; Morruzzi & sory processing has not received the same Magoun, 1949) and sensory processing experimental attention. The present ex- (Fuster, 1958;Lindsley, 1958) existed by periments reexamine this important hy-1958. The notion that the MRF mediates pothesis.Lindsley and Griffiths (cited in Lindsley, 1958) reported electrophysiological This research was supported in part by Grant evidence indicating that the MRF modu-F?i M Hi! 4 ? 6 r fr °m th f ^ational !? f tu « e °f *? en ; !ates the discrimination of a pair of light tal Health to George A. Heise and by Biomedical n L. c• i v -LA n i_ o -f Sciences Support Grant PHS RR 7031-10 to Indiana flashes from a sln i le h g ht flash -SpeClfl-University. The assistance of George A. Heise and cally, they found that in the acute cat or Richard A. Martin in preparing the manuscript and monkey, two 20-jU-Sec light flashes sepain constructing the apparatus is gratefully acknowlrate( J by 100 msec generated two distinct 6d Requests for reprints should be sent to John E. eV °ked Potentials in the visual cortex Kelsey, Department of Psychology, Indiana Uni-whereas a pair ot flashes separated by only versity, Bloomington, Indiana 47401. 50 msec generated a single merged poten-951 952 LEE HOYMAN AND JOHN E. KELSEY

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Section: Resultsmentioning

confidence: 98%

“…The inferior colliculus was selected as one area because stimulating that part of the primary auditory pathway can act as a salient cue (Colavita, 1973;Nieder & Neff, 1961). The limbic system was chosen as a second area.…”

Section: Methodsmentioning

confidence: 99%

Facilitation of flicker discriminability by electrical stimulation of the mesencephalic reticular formation of the rat.

Hoyman¹,

Kelsey²

1977

Journal of Comparative and Physiological Psychology

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The retrieval of learned information—A neurophysiological convergence-divergence theory

Grinberg-Zylberbaum¹

1976

Journal of Theoretical Biology

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Transfer of learned discrimination from peripheral to central auditory stimulation in cats

Cited by 2 publications

References 8 publications

Facilitation of flicker discriminability by electrical stimulation of the mesencephalic reticular formation of the rat.

Facilitation of flicker discriminability by electrical stimulation of the mesencephalic reticular formation of the rat.

The retrieval of learned information—A neurophysiological convergence-divergence theory

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