Is There Facilitation At Uncued Locations To IOR

Immediately following an event at a peripheral location there is facilitation for the processing of other stimuli near that location. It reflects a reflexive shift of attention towards the source of stimulation. After attention is removed from such a peripheral location, there is then delayed responding to stimuli subsequently displayed there. This inhibitory aftereffect is labeled'inhibition of return (IOR)'.IOR is normally measured by subtracting RT to targets in uncued locations from RT to targets in cued locations since it is first described. Since this measure may compound inhibition at cued locations and facilitation at uncued locations. The present study compared RT to targets in different emotional fixation cues respectively at cued locations and at uncued locations using the character that differernt emotional fixation cues affect diverse attentional dwell time, then the sourse of IOR and wheather there is facilitation in uncued locations will be made sure. Preparatory experiments are made to validate IOR with the time parameters of the formal experiments'needs respectively in detection tasks and in discrimination tasks. The experiment one is designed within-subjects 3×3×2 in the discrimination tasks, which discusss the source of difference in IOR. The results suggest that there may be no facilitation at uncued locations and IOR owe to inhibition at cued locations with executive attention. The experiment two is designed within-subjects 3×3×2 in the detection tasks. The results prove out the measure of experiment one based on attention, and then supports secondary the results of the discrimination tasks.