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ERIC Number: EJ848308
Record Type: Journal
Publication Date: 2004
Pages: 10
Abstractor: As Provided
Reference Count: 18
ISSN: ISSN-0211-2159
Latent Inhibition as a Function of US Intensity in a Two-Stage CER Procedure
Rodriguez, Gabriel; Alonso, Gumersinda
Psicologica: International Journal of Methodology and Experimental Psychology, v25 n2 p207-216 2004
An experiment is reported in which the effect of unconditioned stimulus (US) intensity on latent inhibition (LI) was examined, using a two-stage conditioned emotional response (CER) procedure in rats. A tone was used as the pre-exposed and conditioned stimulus (CS), and a foot-shock of either a low (0.3 mA) or high (0.7 mA) intensity was used as the US. A 2 x 2 factorial design was employed. The first factor was the pre-exposure condition (72 pre-exposures or non-pre-exposure) and the second was foot-shock intensity (low or high). A more durable LI effect was observed in the low-intensity condition than in the high-intensity condition during conditioning trials. The authors discuss the possibility that US intensity modulates either a process of restoring attention to the CS during conditioning or a contextual change, responsible for attenuating the LI effect in the high-intensity condition with respect to the low-intensity condition. (Contains 1 figure.)
University of Valencia. Dept. Metodologia, Facultad de Psicologia, Avda. Blasco Ibanez 21, 46010 Valencia, Spain. Tel: +34-96-386-4100; Web site:
Publication Type: Journal Articles; Reports - Research
Education Level: N/A
Audience: N/A
Language: English
Sponsor: N/A
Authoring Institution: N/A