Differential effects of expectancy and associative mechanisms on diminution of unconditioned response in electrodermal classical conditioning
Year: 2002
Type: article
Abstract: The purpose of this experiment was to study whether conditioned diminution of the unconditioned response (UR) is a phenomenon with an associative basis. Twenty-five subjects received discrimination\n\t\t\t\t training with an interval between conditioned stimulus (CS) and unconditioned stimulus (US) of 5 s\n\t\t\t\t (differential conditioning group). The same stimuli were presented to another twenty-five subjects, but\n\t\t\t\t in an explicitly uncorrelated manner (non-conditioning group). After the acquisition phase, participants\n\t\t\t\t of each group were tested with seven presentations of CS+/US and CS-/US. The results of the acquisition phase showed that the UR amplitude was lower in the differential conditioning group than in the\n\t\t\t\t non-conditioning group. In the testing phase, CS+/US presentations elicited URs of lower amplitude\n\t\t\t\t than CS-/US in the differential conditioning group, but not in the non-conditioning-group. These findings are discussed as a result of expectancy and associative effects of conditioning processes
Authors: José Luis Marcos Malmierca, Jaime Redondo
Language: English
Topic: Memory and Neural Mechanisms
Subfield: Cognitive Neuroscience
Field: Neuroscience
Domain: Life Sciences
Open Access status: green
Funder: Xunta de Galicia
OpenAlex ID: W1597309703