In a series of three experiments it studies a possible spatial specificity of the mechanism of inhibitory attention. Across negative priming paradigm, it examines in a specific way if it exits differences between distract stimulus placed inside the area of attention of the subject and of others placed in the periphery. By means of the utilization of a letter matching task similar to that it was used by Nelly, Lissner and Beck (1990), it obtains priming negative effect only in those distract letter which place out of the area of attention of the subject. The results suggest that the inhibitory system that work in the level of physical and special characteristics can not inhibit the stimulus placed inside the area, for which all of them are forcibly process in a semamic level.En una serie de (tres experimentos se estudia una posible especificidad espacial del mecanismo atencional inhibitorio. A través del paradigma de priming negativo se examina en concreto si existen diferencias entre estímulos distractores situados dentro del foco atencional del sujeto y otros situados en la periferia. Mediante la utilización de una letter-matching task similar a la que emplearon Nelly, Lissner y Beck (1990), se obtiene efecto de priming negativo sólo en aquellas letras distractores que se sitúan fuera del foco de atención del sujeto. Los resultados sugieren que el sistema inhibitorio que actúa a nivel de características físicas y espaciales no puede inhibir los estímulos situados dentro del foco, por lo cual todos ellos son forzosamente procesados a nivel semántico
