Relative durations of conditioned stimulus and intertrial interval in conditioned suppression.
نویسندگان
چکیده
منابع مشابه
Familiarity-Based Stimulus Generalization of Conditioned Suppression
We report that stimulus novelty/familiarity is able to modulate stimulus generalization and discuss the theoretical implications of novelty/familiarity coding. Rats in Skinner boxes received clicker → shock pairings before generalization testing to a tone. Before clicker training, different groups of rats received preexposure treatments designed to systematically modulate the clicker and the to...
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Unconditioned and conditioned effects of house-light offset and acoustic white noise on barpressing behavior maintained by intermittent food reinforcement were tested in male hooded rats. Presentations of these stimuli prior to their acquiring signal value initially tended to depress and then to enhance barpressing rate, but generally the rate of the on-going barpressing was lower during the li...
متن کاملMorphine-induced suppression of conditioned stimulus intake: effects of stimulus type and insular cortex lesions.
Intake of an unconditionally preferred taste stimulus (e.g., saccharin) is reduced by contingent administration of a drug of abuse (e.g., morphine). We examined the influence of insular cortex (IC) lesions on morphine-induced suppression of an olfactory cue and two taste stimuli with different levels of perceived innate reward value. Two major findings emerged from this study. First, morphine s...
متن کاملA short intertrial interval facilitates acquisition of context-conditioned fear and a short retention interval facilitates its expression.
Rats were shocked in a context on two occasions and then tested for fear reactions as indexed by freezing. Rats spent the interval between conditioning trials and between conditioning and test in their home cages. A short interval between context-conditioning trials or between trials involving a discrete conditioned stimulus (CS) produced better learning than longer intervals. A short retention...
متن کاملInsular cortex lesions and morphine-induced suppression of conditioned stimulus intake in the rat.
The present experiment examined the influence of insular cortex (IC) lesions on the intake of a taste stimulus in a consummatory procedure that used morphine as the unconditioned stimulus. In normal rats, morphine caused a rapid reduction in saccharin intake when the taste was novel but not when it was familiar. Irrespective of stimulus novelty, morphine had little influence on the saccharin co...
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ژورنال
عنوان ژورنال: Journal of the Experimental Analysis of Behavior
سال: 1986
ISSN: 0022-5002
DOI: 10.1901/jeab.1986.46-51