AI Article Synopsis
- Feature-based attention enhances object perception, particularly in distinguishing aspects like color when cues are provided, as shown by participants’ improved accuracy with valid prompts.
- The study confirmed that feature-based influences occur between 252-502 ms after stimulus presentation, allowing researchers to trace the timing of these effects from occipital to frontal brain regions.
- Findings align with prior research on processing similar stimuli and suggest that focusing on complex features benefits object perception through both feed-forward and feedback processes in the visual system.
Article Abstract
Feature-based attention has been shown to aid object perception. Our previous ERP effects revealed temporally late feature-based modulation in response to objects relative to motion. The aim of the current study was to confirm the timing of feature-based influences on object perception while cueing within the feature dimension of shape. Participants were told to expect either "pillow" or "flower" objects embedded among random white and black lines. Participants more accurately reported the object's main color for valid compared to invalid shapes. ERPs revealed modulation from 252-502 ms, from occipital to frontal electrodes. Our results are consistent with previous findings examining the time course for processing similar stimuli (illusory contours). Our results provide novel insights into how attending to features of higher complexity aids object perception presumably via feed-forward and feedback mechanisms along the visual hierarchy.
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| http://dx.doi.org/10.1111/psyp.12174 | DOI Listing |
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