Overlapping Neural Responses to Reflectional Symmetry and Glass Patterns Revealed by an ERP Priming Paradigm

Tyson-Carr, John ORCID: 0000-0003-3364-2184, Rampone, Giulia ORCID: 0000-0002-2710-688X, Karakashevska, Elena, Derpsch, Yiovanna, Bertamini, Marco ORCID: 0000-0001-8617-6864 and Makin, Alexis DJ ORCID: 0000-0002-4490-7400 (2022) Overlapping Neural Responses to Reflectional Symmetry and Glass Patterns Revealed by an ERP Priming Paradigm SYMMETRY-BASEL, 14 (7). 1329-. ISSN 2073-8994, 2073-8994

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Abstract

The extrastriate visual cortex is activated by visual regularity and generates an ERP known as the sustained posterior negativity (SPN). Spatial filter models offer a biologically plausible account of regularity detection based on the spectral properties of an image. These models are specific to reflection and therefore imply that reflectional symmetry and Glass patterns are coded by different neural populations. We utilised the SPN priming effect to probe representational overlap between reflection and Glass patterns. For each trial, participants were presented with a rapid succession of three patterns. In the Repeated condition, three reflections or three Glass patterns were presented. In the Changing condition, patterns alternated between reflection and Glass patterns. An increase in SPN amplitude (priming) was observed in both the Repeated and Changing conditions. Results indicate a greater representational overlap in the brain between reflection and Glass patterns than predicted by spatial filter models.

Item Type:	Article
Uncontrolled Keywords:	sustained posterior negativity, SPN priming, reflectional symmetry, glass patterns, extrastriate cortex
Divisions:	Faculty of Health & Life Sciences Faculty of Health & Life Sciences > Inst. Population Health
Depositing User:	Symplectic Admin
Date Deposited:	12 Jul 2022 15:36
Last Modified:	16 Jun 2026 12:04
DOI:	10.3390/sym14071329
Open Access URL:	https://doi.org/10.3390/sym14071329
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3158309
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