Condicionamiento aversivo de la respuesta ocular en un paradigma imagen-imagen

Fear conditioning is essential for understanding the etiology of anxiety disorders. In translational research, the ocular response (OR) stands out as a continuously measurable and non-invasive indicator of fear, generating a large volume of data without participant intervention. Although the OR varies in response to emotionally relevant stimuli, few studies use both visual conditioned stimulus (CS) and unconditioned stimulus (UCS) to assess learning by measuring the OR. This study aims to validate a model of fear conditioning by recording fixation time, number of fixations, first fixation latency, and expectation of EI occurrence during acquisition and extinction phases. The results demonstrate differential learning in the acquisition and extinction of the expectation of EI occurrence, as well as a greater number of fixations to aversive images.