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Reinforcement Magnitude as a Determinant of Performance Decrement after Electroconvulsive Shock

Oakley S. Ray and Lyle W. Bivens
Science
New Series, Vol. 160, No. 3825 (Apr. 19, 1968), pp. 330-332
Stable URL: http://www.jstor.org/stable/1723785
Page Count: 3
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Reinforcement Magnitude as a Determinant of Performance Decrement after Electroconvulsive Shock
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Abstract

The intensity of a foot shock may be a determinant of the rate at which an avoidance response becomes resistant to disruption by electroconvulsive shock. Mice were trained, one trial a day, in a passive avoidance learning task, with one of three foot-shock intensities. Electroconvulsive shock was administered at various intervals after each trial. At all foot-shock intensities, electroconvulsive shock given 10 seconds after each training trial was effective in disrupting learning. Where electroconvulsive shock was given at longer intervals after each trial, those animals learning at low intensities of foot shock showed greater impairment of performance than those learning at high intensities.

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