Attention Modulates Human Visual Responses to Objects by Tuning Sharpening.

ABSTRACT: Visual stimuli compete with each other for cortical processing and attention biases this competition in favor of the attended stimulus. How does the relationship between the stimuli affect the strength of this attentional bias? Here, we used functional MRI to explore the effect of target-distractor similarity in neural representation on attentional modulation in the human visual cortex using univariate and multivariate pattern analyses. Using stimuli from four object categories (human bodies, cats, cars and houses), we investigated attentional effects in the primary visual area V1, the object-selective regions LO and pFs, the body-selective region EBA, and the scene-selective region PPA. We demonstrated that the strength of the attentional bias towards the target is not fixed but decreases

SUBMITTER: Doostani N 

PROVIDER: S-EPMC10274640 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature