YorkSpace has migrated to a new version of its software. Access our Help Resources to learn how to use the refreshed site. Contact diginit@yorku.ca if you have any questions about the migration.
 

Oculomotor system can differentially process red and green colors during saccade programming in the presence of a competing distractor

Loading...
Thumbnail Image

Date

2022-09-13

Authors

Ramezanpour, Hamidreza
Blizzard, Shawn
Kehoe, Devin
Fallah, Mazyar

Journal Title

Journal ISSN

Volume Title

Publisher

Experimental Brain Research

Abstract

Selective attention filters irrelevant information entering our brain to allow for fine-tuning of the relevant information processing. In the visual domain, shifts of attention are most often followed by a saccadic eye movement to objects and places of high relevance. Recent studies have shown that the stimulus color can affect saccade target selection and saccade trajectories. While those saccade modulations are based on perceptual color space, the level in the visual processing hierarchy at which color selection biases saccade programming remains unclear. As color has also been shown to influence manual response inhibition which is a key function of the prefrontal cortex, we hypothesized that the effects of color on executive functions would also inherently affect saccade programming. To test this hypothesis, we measured behavioral performance and saccade metrics during a modified saccadic Stroop task which reflects competition between color words (“RED” and “GREEN”) and their color at the level of the prefrontal cortex. Our results revealed that the oculomotor system can differentially process red and green colors when planning a saccade in the presence of a competing distractor.

Description

Keywords

target-distractor similarity, Saccade, Stroop, Color saliency, Top-down control

Citation

Ramezanpour, H., Blizzard, S., Kehoe, D.H. et al. Oculomotor system can differentially process red and green colors during saccade programming in the presence of a competing distractor. Exp Brain Res (2022). https://doi.org/10.1007/s00221-022-06459-8