Frequency-specific and periodic masking of peripheral characters by delayed foveal input.

ABSTRACT: The foveal-feedback mechanism supports peripheral object recognition by processing information about peripheral objects in foveal retinotopic visual cortex. When a foveal object is asynchronously presented with a peripheral target, peripheral discrimination performance is affected differently depending on the relationship between the foveal and peripheral objects. However, it is not clear whether the delayed foveal input competes for foveal resources with the information processed by foveal-feedback or masks it. In the current study, we tested these hypotheses by measuring the effect of foveal noise at different spatial frequencies on peripheral discrimination of familiar and novel characters. Our results showed that the impairment of foveal-feedback was strongest for low-spatial frequency

SUBMITTER: Goktepe N 

PROVIDER: S-EPMC10897220 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature