It is known that when multiple stimuli are present, top-down attention selectively enhances the neural signal in the visual cortex for task-relevant stimuli, but this has been tested only under conditions of minimal competition of visual attention. Here we show during high competition, that is, two stimuli in a shared receptive field possessing opposing modulatory goals, top-down attention suppresses both task-relevant and irrelevant neural signals within 100 ms of stimuli onset. This non-selective engagement of top-down attentional resources serves to reduce the feedforward signal representing irrelevant stimuli.
@article{arxiv.1610.09431,
title = {Attention acts to suppress goal-based conflict under high competition},
author = {Omar Claflin},
journal= {arXiv preprint arXiv:1610.09431},
year = {2025}
}