Caracterización de los tipos de respuesta de parpadeo en un procedimiento de condicionamiento discriminativo en humanos
Conteúdo do artigo principal
Resumo
Se reportaron los resultados de un procedimiento de condicionamiento palpebral en humanos destinado a caracterizar distintos tipos de respuestas. Para ello, ocho participantes recibieron un estímulo condicionado auditivo emparejado con un estímulo incondicionado, soplo de aire en el ojo, mientras que un estímulo condicionado vibro-táctil no fue reforzado. Se demostró la existencia de cuatro repuestas. En los primeros 100 milisegundos (ms) desde la iniciación de los estímulos condicionados ocurren respuestas de pequeña amplitud, denominadas alfa, a las cuales le siguen otras respuestas de amplitud intermedia, denominadas voluntarias (200-300 ms) y condicionadas (300-400 ms). Finalmente, las respuestas incondicionadas ocurren en los 200 ms que siguen el inicio del estímulo incondicionado y son de gran amplitud. Tanto las respuestas voluntarias como condicionadas son más frecuentes en presencia del estímulo A que B. Discutimos la relevancia de identificar y distinguir estos tipos de respuestas en cualquier rutina de condicionamiento clásico.
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