Collinear search impairment is luminance contrast invariant

Abstract Collinear search impairment (CSI) is a phenomenon where a task-irrelevant collinear structure impairs a target search in a visual display. It has been suggested that CSI is monocular, occurs without the participants’ access to consciousness and is possibly processed at an early visual site...

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Autores principales:	Chia-huei Tseng, Hiu Mei Chow, Jiayu Liang, Satoshi Shioiri, Chien-Chung Chen
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8ada81e057cf427ebf1dd01ad437363b
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spelling	oai:doaj.org-article:8ada81e057cf427ebf1dd01ad437363b2021-12-02T18:25:04ZCollinear search impairment is luminance contrast invariant10.1038/s41598-021-90909-w2045-2322https://doaj.org/article/8ada81e057cf427ebf1dd01ad437363b2021-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90909-whttps://doaj.org/toc/2045-2322Abstract Collinear search impairment (CSI) is a phenomenon where a task-irrelevant collinear structure impairs a target search in a visual display. It has been suggested that CSI is monocular, occurs without the participants’ access to consciousness and is possibly processed at an early visual site (e.g. V1). This effect has frequently been compared with a well-documented opposite effect called attentional capture (AC), in which salient and task-irrelevant basic features (e.g. color, orientation) enhance target detection. However, whether this phenomenon can be attributed to non-attentional factors such as collinear facilitation (CF) has not yet been formally tested. Here we used one well-established property of CF, i.e. that target contrast modulates its effect direction (facilitation vs suppression), to examine whether CSI shared similar signature profiles along different contrast levels. In other words, we tested whether CSI previously observed at the supra-threshold level was reduced or reversed at near-threshold contrast levels. Our results showed that, regardless of the luminance contrast levels, participants spent a longer time searching for targets displayed on the salient singleton collinear structure than those displayed off the structure. Contrast invariance suggests that it is unlikely that CSI is exclusively sub-served by an early vision mechanism (e.g. CF).Chia-huei TsengHiu Mei ChowJiayu LiangSatoshi ShioiriChien-Chung ChenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Chia-huei Tseng Hiu Mei Chow Jiayu Liang Satoshi Shioiri Chien-Chung Chen Collinear search impairment is luminance contrast invariant
description	Abstract Collinear search impairment (CSI) is a phenomenon where a task-irrelevant collinear structure impairs a target search in a visual display. It has been suggested that CSI is monocular, occurs without the participants’ access to consciousness and is possibly processed at an early visual site (e.g. V1). This effect has frequently been compared with a well-documented opposite effect called attentional capture (AC), in which salient and task-irrelevant basic features (e.g. color, orientation) enhance target detection. However, whether this phenomenon can be attributed to non-attentional factors such as collinear facilitation (CF) has not yet been formally tested. Here we used one well-established property of CF, i.e. that target contrast modulates its effect direction (facilitation vs suppression), to examine whether CSI shared similar signature profiles along different contrast levels. In other words, we tested whether CSI previously observed at the supra-threshold level was reduced or reversed at near-threshold contrast levels. Our results showed that, regardless of the luminance contrast levels, participants spent a longer time searching for targets displayed on the salient singleton collinear structure than those displayed off the structure. Contrast invariance suggests that it is unlikely that CSI is exclusively sub-served by an early vision mechanism (e.g. CF).
format	article
author	Chia-huei Tseng Hiu Mei Chow Jiayu Liang Satoshi Shioiri Chien-Chung Chen
author_facet	Chia-huei Tseng Hiu Mei Chow Jiayu Liang Satoshi Shioiri Chien-Chung Chen
author_sort	Chia-huei Tseng
title	Collinear search impairment is luminance contrast invariant
title_short	Collinear search impairment is luminance contrast invariant
title_full	Collinear search impairment is luminance contrast invariant
title_fullStr	Collinear search impairment is luminance contrast invariant
title_full_unstemmed	Collinear search impairment is luminance contrast invariant
title_sort	collinear search impairment is luminance contrast invariant
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/8ada81e057cf427ebf1dd01ad437363b
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_version_	1718378051111223296

Collinear search impairment is luminance contrast invariant

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