Results 251 to 260 of about 886,899 (305)

Dissolution Rates under Sink Conditions

Journal of Pharmaceutical Sciences, 1971
Abstract Equations are given for the dissolution of a drug into an aqueous phase overlayered with a lipid phase, in which back transfer from the lipid phase is assumed possible. Consideration of both the presence and absence of back transfer, assuming in each that the amount of drug in the aqueous phase either approaches saturation or remains ...
P J, Niebergall   +2 more
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Heart rate conditioning in mice

Behavior Genetics, 1972
Two strains of highly inbred mice were given classical conditioning with noise as CS and shock as US. Control groups for pseudoconditioning were included, and heart rate was measured before and after conditioning.
Herrmann, T, Carran, A
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Time, rate, and conditioning.

Psychological Review, 2000
The authors draw together and develop previous timing models for a broad range of conditioning phenomena to reveal their common conceptual foundations: First, conditioning depends on the learning of the temporal intervals between events and the reciprocals of these intervals, the rates of event occurrence.
C. R. Gallistel, John Gibbon
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Differential Operant Conditioning of Heart Rate

Psychosomatic Medicine, 1968
Five normal female subjects (Ss) were taught to increase and decrease cyclically their heart rate (HR) by means of a differential operant conditioning technique. Discrimination between slowing and speeding was easily demonstrated; however, the ability significantly to increase and decrease HR relative to resting rate was less apparent.
H I, Levene, B T, Engel, J A, Pearson
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Response Rate and Conditioned Suppression

Psychological Reports, 1966
Two experiments are reported in which a yoked-box design permitted variation of response rate while reinforcement frequency was controlled. In both studies, rats responding at high rates showed more conditioned suppression than their partners responding at lower rates.
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OPERANT CONDITIONING OF HEART RATE SPEEDING

Psychophysiology, 1967
ABSTRACTThe purpose of this study was to see if heart rate (HR) speeding could be operantly conditioned. Five experimental Ss and five yoked‐control Ss were studied. Experimental Ss were positively reinforced for speeding their HR on a beat‐by‐beat basis, whereas yoked‐control Ss were reinforced in a pattern based on the performance of paired ...
B T, Engel, R A, Chism
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OPERANT CONDITIONING OF HEART RATE SLOWING

Psychophysiology, 1966
ABSTRACTThe purpose of this study was to see if heart rate (HR) slowing could be operantly conditioned. Ten experimental Ss and five yoked‐control Ss were studied. Experimental Ss were positively reinforced for slowing their HR on a beat‐by‐beat basis, whereas yoked‐control Ss were reinforced in a pattern based on the performance of paired experimental
B T, Engel, S P, Hansen
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