Condicionamiento clásico electrodérmico aversivo y apetitivo utilizando imágenes como estímulos
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Colegio Oficial de Psicólogos del Principado
Abstract
El principal objetivo de este estudio consistió en comprobar si era posible obtener condicionamiento
clásico electrodérmico, tanto aversivo como apetitivo, utilizando imágenes como estímulos
condicionados (ECs) y estímulos incondicionados (EIs). Además, se pretendía averiguar si, como
consecuencia de dicho condicionamiento, se observaba el fenómeno de disminución de la respuesta
incondicionada (RI). Para ello se seleccionaron como estímulos imágenes del IAPS («International
Affective Picture System»). Como EI aversivo (EIav) se empleó una fotografía que mostraba un rostro
quemado y como EI apetitivo (EIap) una escena de contenido erótico. Tanto el EC aversivo (ECav) como
el EC apetitivo (ECap) consistieron en fotografías con valores intermedios de valencia y arousal que
mostraban rostros de varones. En el grupo experimental se presentaron 10 ensayos ECav/EIav y otros
10 ensayos ECap/EIap. En el grupo de control cada estímulo (ECav, ECap, EIav y EIap) se presentó
en 10 ocasiones en orden pseudoaleatorio. Se registró la respuesta de conductancia electrodérmica
(Skin Conductance Response, SCR) elicitada por los ECs y EIs. Los resultados mostraron que se
había obtenido condicionamiento aversivo, aunque no apetitivo ni disminución de la RI. Se discuten
las difi cultades para obtener condicionamiento utilizando imágenes como estímulos y las posibles
alternativas para superarlas en futuras investigaciones
The principal goal of this study was to verify whether it was possible to obtain both aversive and appetitive electrodermal classical conditioning, using pictures as conditioned stimuli (CS), and unconditioned stimuli (US). Additionally, we tried to verify whether, as a consequence of such conditioning, diminution of the unconditioned response (UR) was observed. With this aim, IAPS («International Affective Picture System») pictures were selected as stimuli. A picture showing a burnt face was used as the aversive US (USav), and a picture showing a scene with erotic content was used as the appetitive US (USap). As the aversive CS (CSav), and appetitive CS (CSap), two images with intermediate values of valence and arousal showing male faces were selected. In the experimental group, 10 CSav/USav and 10 CSap/ USap trials were presented. In the control group 10 CSav, CSap, USav, and USap trials were presented in pseudorandom order. Skin conductance response (SCR) elicited by both the CSs and the USs was scored. Results showed aversive conditioning, but neither appetitive conditioning nor UR diminution. Problems to obtain conditioning using pictures as stimuli and possible options to overcome them in future research are discussed
The principal goal of this study was to verify whether it was possible to obtain both aversive and appetitive electrodermal classical conditioning, using pictures as conditioned stimuli (CS), and unconditioned stimuli (US). Additionally, we tried to verify whether, as a consequence of such conditioning, diminution of the unconditioned response (UR) was observed. With this aim, IAPS («International Affective Picture System») pictures were selected as stimuli. A picture showing a burnt face was used as the aversive US (USav), and a picture showing a scene with erotic content was used as the appetitive US (USap). As the aversive CS (CSav), and appetitive CS (CSap), two images with intermediate values of valence and arousal showing male faces were selected. In the experimental group, 10 CSav/USav and 10 CSap/ USap trials were presented. In the control group 10 CSav, CSap, USav, and USap trials were presented in pseudorandom order. Skin conductance response (SCR) elicited by both the CSs and the USs was scored. Results showed aversive conditioning, but neither appetitive conditioning nor UR diminution. Problems to obtain conditioning using pictures as stimuli and possible options to overcome them in future research are discussed
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Redondo, J., & Méndez, A. (2011). Condicionamiento clásico electrodérmico aversivo y apetitivo utilizando imágenes como estímulos. Psicothema, 23(2), 203-208
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