Object-based attention requires monocular visual pathways

N. Strommer, S. Al-Janabi, A. S. Greenberg, S. Gabay

Research output: Contribution to journalArticlepeer-review

Abstract

Mechanisms of object-based attention (OBA) are commonly associated with the cerebral cortex. However, less is known about the involvement of subcortical visual pathways in these processes. Knowledge of the neural mechanisms subserving OBA can provide insight into the evolutionary trajectory of attentional selection. In the current study, the classic double-rectangle cueing task was implemented using a stereoscope in order to differentiate between the involvement of lower (monocular) and higher (binocular) visual pathways in OBA processes. We found that monocular visual pathways are involved in two main aspects of OBA: exogenous orienting towards a cued object (Experiment 1; N =33) and attentional deployment within a cued object (Experiment 2; N =23); this is evident by the presence of OBA only when both the cue and target were presented to the same eye. Thus, these results indicate that monocular (mostly subcortical) visual regions are not simply passing information to higher cortical areas but have a functional computational role in OBA. These findings emphasize the importance of lower regions in attentional processes and, more specifically, in OBA.

Original languageEnglish
JournalPsychonomic Bulletin and Review
Early online date13 Feb 2024
DOIs
StateE-pub ahead of print - 13 Feb 2024

Bibliographical note

Publisher Copyright:
© The Author(s) 2024.

Keywords

  • Neurocognition
  • Object-based attention
  • Subcortical regions
  • Visual attention;

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Developmental and Educational Psychology

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