Investigating the role of spatial filtering on distractor suppression

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Vaishnavi Mohite - , University of Hyderabad (Author)
  • Seema Prasad - , Department of Child and Adolescent Psychiatry and Psychotherapy (Author)
  • Ramesh Kumar Mishra - , University of Hyderabad (Author)

Abstract

In recent years, evidence has accumulated towards a distractor suppression mechanism that enables efficient selection of targets in a visual search task. According to these findings, the search for a target is faster in the presence of a salient distractor in a display among homogenous distractors as opposed to its absence. Studies have also shown that distractor suppression not only operates on the feature level but can also be spatially guided. The motivation of the current study was to examine if spatially guided distractor suppression can be goal-driven. We tested this across four experiments. In Experiment 1A, the task was to search for a shape target (e.g., a circle) and discriminate the orientation of the line within it. In some trials, a salient color distractor was presented in the display while participants were told that it appeared in one of the two locations on the horizontal axis (or the vertical axis, counterbalanced across participants). We expected enhanced distractor suppression when the salient distractor appeared within this "spatial filter" but did not find it since the target was also presented at the filtered locations. Experiment 1B replicated Experiment 1A, except that the target was always presented outside the filter; filtering enhanced search performance. In Experiment 2 even when the filter contained the salient distractor in only 65% of the filtered trials, filtering benefited search performance. In Experiment 3, the filter changed on every trial and did not benefit suppression.

Details

Original languageEnglish
Pages (from-to)2552-2563
Number of pages12
JournalAttention, Perception, and Psychophysics
Volume86
Issue number7
Early online date26 Dec 2023
Publication statusPublished - Oct 2024
Peer-reviewedYes

External IDs

Scopus 85180638222

Keywords

Library keywords