Electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.

An Event Related Potential (ERP) component called the Sustained Posterior Negativity (SPN) is generated by regular visual patterns (e.g. vertical reflectional symmetry, horizontal reflectional symmetry or rotational symmetry). Behavioural studies suggest symmetry becomes increasingly salient when th...

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Autores principales:	Alexis D J Makin, John Tyson-Carr, Yiovanna Derpsch, Giulia Rampone, Marco Bertamini
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6a5eb2ab72124c84a0b0e101df6e6292
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spelling	oai:doaj.org-article:6a5eb2ab72124c84a0b0e101df6e62922021-12-02T20:15:31ZElectrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.1932-620310.1371/journal.pone.0254361https://doaj.org/article/6a5eb2ab72124c84a0b0e101df6e62922021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0254361https://doaj.org/toc/1932-6203An Event Related Potential (ERP) component called the Sustained Posterior Negativity (SPN) is generated by regular visual patterns (e.g. vertical reflectional symmetry, horizontal reflectional symmetry or rotational symmetry). Behavioural studies suggest symmetry becomes increasingly salient when the exemplars update rapidly. In line with this, Experiment 1 (N = 48) found that SPN amplitude increased when three different reflectional symmetry patterns were presented sequentially. We call this effect 'SPN priming'. We then exploited SPN priming to investigate independence of different symmetry representations. SPN priming did not survive changes in retinal location (Experiment 2, N = 48) or non-orthogonal changes in axis orientation (Experiment 3, N = 48). However, SPN priming transferred between vertical and horizontal axis orientations (Experiment 4, N = 48) and between reflectional and rotational symmetry (Experiment 5, N = 48). SPN priming is interesting in itself, and a useful new method for identifying functional boundaries of the symmetry response. We conclude that visual regularities at different retinal locations are coded independently. However, there is some overlap between different regularities presented at the same retinal location.Alexis D J MakinJohn Tyson-CarrYiovanna DerpschGiulia RamponeMarco BertaminiPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0254361 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexis D J Makin John Tyson-Carr Yiovanna Derpsch Giulia Rampone Marco Bertamini Electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.
description	An Event Related Potential (ERP) component called the Sustained Posterior Negativity (SPN) is generated by regular visual patterns (e.g. vertical reflectional symmetry, horizontal reflectional symmetry or rotational symmetry). Behavioural studies suggest symmetry becomes increasingly salient when the exemplars update rapidly. In line with this, Experiment 1 (N = 48) found that SPN amplitude increased when three different reflectional symmetry patterns were presented sequentially. We call this effect 'SPN priming'. We then exploited SPN priming to investigate independence of different symmetry representations. SPN priming did not survive changes in retinal location (Experiment 2, N = 48) or non-orthogonal changes in axis orientation (Experiment 3, N = 48). However, SPN priming transferred between vertical and horizontal axis orientations (Experiment 4, N = 48) and between reflectional and rotational symmetry (Experiment 5, N = 48). SPN priming is interesting in itself, and a useful new method for identifying functional boundaries of the symmetry response. We conclude that visual regularities at different retinal locations are coded independently. However, there is some overlap between different regularities presented at the same retinal location.
format	article
author	Alexis D J Makin John Tyson-Carr Yiovanna Derpsch Giulia Rampone Marco Bertamini
author_facet	Alexis D J Makin John Tyson-Carr Yiovanna Derpsch Giulia Rampone Marco Bertamini
author_sort	Alexis D J Makin
title	Electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.
title_short	Electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.
title_full	Electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.
title_fullStr	Electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.
title_full_unstemmed	Electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.
title_sort	electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/6a5eb2ab72124c84a0b0e101df6e6292
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Electrophysiological priming effects demonstrate independence and overlap of visual regularity representations in the extrastriate cortex.

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