Violated expectations for spatial and feature attributes of visual trajectories modulate event-related potential amplitudes across the visual processing hierarchy.

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From: Biological Psychology(Vol. 174)
Publisher: Elsevier B.V.
Document Type: Report; Brief article
Length: 373 words

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Abstract :

Keywords Attention; Prediction; EEG; ERP; N170; N2pc; N300 Highlights * Attention and prediction interact during early visual perception. * Event-related potentials enlarge when spatial and featural contexts are violated. * The N170 indexes prediction error signalling irrespective of the type of violation. * The N300 reflects prediction updating involving reorientation of spatial attention. Abstract During visual perception, the brain must combine its predictions about what is to be perceived with incoming relevant information. The present study investigated how this process interacts with attention by using event-related potentials that index these cognitive mechanisms. Specifically, this study focused on examining how the amplitudes of the N170, N2pc, and N300 would be modulated by violations of expectations for spatial and featural attributes of visual stimuli. Participants viewed a series of shape stimuli in which a salient shape moved across a set of circular locations so that the trajectory of the shape implied the final position and shape of the stimulus. The final salient stimuli occurred in one of four possible outcomes: predictable position and shape, predictable position but unpredictable shape, unpredictable position but predictable shape, and unpredictable position and shape. The N170 was enhanced by unpredictable positions and shapes, whereas the N300 was enlarged only by unpredictable positions. The N2pc was not modulated by violations of expectations for shapes or positions. Additionally, it was observed post-hoc that the P1pc amplitude was increased by unpredictable shapes. These findings revealed that incorrect prediction increases neural activity. Furthermore, they suggest that prediction and attention interact differently in different stages of visual perception, depending on the type of attention being engaged: The N170 indexes initial prediction error signalling irrespective of the type of information (spatial or featural) in which error occurs, followed by the N300 as a marker of prediction updating involving reorientation of spatial attention. Author Affiliation: (a) School of Psychology and Counselling, Faculty of Health, Queensland University of Technology (QUT), Brisbane, Queensland, Australia (b) Laboratory of Cognitive and Experimental Neuropsychology, School of Psychology, Faculty of Health and Behavioural Sciences, University of Queensland, Brisbane, Queensland, Australia * Corresponding author. Article History: Received 22 February 2022; Revised 3 August 2022; Accepted 24 August 2022 Byline: Kristen S. Baker (a), Naohide Yamamoto [] (a,*), Alan J. Pegna (b), Patrick Johnston (a)

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Gale Document Number: GALE|A721718546