Derpsch, Yiovanna, Tyson-Carr, John, Rampone, Giulia, Bertamini, Marco 
ORCID: 0000-0001-8617-6864 and Makin, Alexis DJ ORCID: 0000-0002-4490-7400
(2024)
Event related potentials (ERP) reveal a robust response to visual symmetry in unattended visual regions.
NeuroImage, 290.
p. 120568.
ISSN 1053-8119, 1095-9572
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Derpsch et al. (2024) Neuroimage.pdf - Open Access published version Download (6MB) | Preview |
Abstract
Visual symmetry at fixation generates a bilateral Event Related Potential (ERP) called the Sustained Posterior Negativity (SPN). Symmetry presented in the left visual hemifield generates a contralateral SPN over the right hemisphere and vice versa. The current study examined whether the contralateral SPN is modulated by the focus of spatial attention. On each trial there were two dot patterns, one to the left of fixation, and one to the right of fixation. A central arrow cue pointed to one of the patterns and participants discriminated its regularity (symmetry or random). We compared contralateral SPN amplitude generated by symmetry at attended and unattended spatial locations. While the response to attended symmetry was slightly enhanced, the response to unattended symmetry was still substantial. Although visual symmetry detection is a computational challenge, we conclude that the brain processes visual symmetry in unattended parts of the visual field.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Symmetry, EEG, Perception, Attention, Sustained posterior negativity |
| Depositing User: | Symplectic Admin |
| Date Deposited: | 17 Jul 2024 08:25 |
| Last Modified: | 23 May 2026 08:36 |
| DOI: | 10.1016/j.neuroimage.2024.120568 |
| Related Websites: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3182916 |
| Disclaimer: | The University of Liverpool is not responsible for content contained on other websites from links within repository metadata. Please contact us if you notice anything that appears incorrect or inappropriate. |
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