Contributed Session II: Neural correlates of serial processing during divided attention across multipart objects

Dina V Popovkina; Kelly Chang; Lucas M Suarez; John Palmer; Cathleen M Moore; Geoffrey M Boynton

doi:10.1167/jov.23.15.79

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Contributed Session II: Neural correlates of serial processing during divided attention across multipart objects

Abstract

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Contributed Session II: Neural correlates of serial processing during divided attention across multipart objects

Dina V Popovkina, Kelly Chang, Lucas M Suarez, John Palmer, Cathleen M Moore and Geoffrey M Boynton

Journal of vision (Charlottesville, Va.), Vol.23(15), p.79

12/01/2023

DOI: 10.1167/jov.23.15.79

PMID: 38109569

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https://doi.org/10.1167/jov.23.15.79View

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Abstract

Judgments of multiple simultaneously presented stimuli produce a variety of divided attention effects. For example, participants can detect colors in two locations as well as in one, but can recognize only one masked word at a time (White, Palmer, & Boynton, Psych Science 2018). Here, we ask whether judging objects with interchangeable parts, similar to letters in words, also produces performance deficits consistent with serial processing, and which brain areas subserve this process. In a probe recognition task, participants discriminated abstract objects made of Duplo™ parts. On each trial, two objects were presented, with either one or both objects cued as relevant (single- and dual-task conditions, respectively). The distractor probes were made of the same parts in a different order. The difference in performance between the single- and dual-task conditions was 17±1% (n=13), consistent with the prediction of a serial model and rejecting the fixed-capacity parallel model. This result suggests that there is a visual brain area where information can be processed about only one object at a time. Currently, we are using fMRI to examine activity in object-selective regions of the human lateral occipital cortex. To seek evidence of serial processing, we are assessing how stimulus-related modulation is mediated by selective attention; the area of interest should show a modulation for only the attended stimulus location.

Brain

Magnetic Resonance Imaging

Visual Perception

Attention

Brain Mapping

Humans

Occipital Lobe - diagnostic imaging

Recognition, Psychology

Details

Title: Subtitle: Contributed Session II: Neural correlates of serial processing during divided attention across multipart objects
Creators: Dina V Popovkina - University of Washington
Kelly Chang - University of Washington
Lucas M Suarez - University of Washington
John Palmer - University of Washington
Cathleen M Moore - University of Iowa
Geoffrey M Boynton - University of Washington
Resource Type: Abstract
Publication Details: Journal of vision (Charlottesville, Va.), Vol.23(15), p.79
DOI: 10.1167/jov.23.15.79
PMID: 38109569
NLM abbreviation: J Vis
eISSN: 1534-7362
Language: English
Date published: 12/01/2023
Academic Unit: Psychological and Brain Sciences; Injury Prevention Research Center
Record Identifier: 9984533289002771

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