en
Scientific article
Open access
English

Task relevance and negative reward modulate the disengagement deficit of patients with spatial neglect

Published inNeuropsychologia, vol. 175, 108365
Publication date2022-10-10
First online date2022-09-02
Abstract

Though motivational value is a recognized trigger of approach and avoidance behavior, less is known about the potential of reward to capture attention. We here explored whether positive or negative reward modulates the characteristic deficit of patients with left spatial neglect to disengage attention from an ipsilesional distracter. We built our study on recent observations showing that the disengagement deficit is exaggerated for distracters with target-defining features, indicating that task-relevance captures attention. Patients with left neglect and matched healthy controls were asked to react to lateralized, colored targets preceded by a peripheral cue. Crucially, the cue either possessed the color of the target and was thus task-relevant, or was followed by a positive, negative, or neutral symbolic reward. Neglect patients only exhibited a disengagement deficit when cues were task-relevant or were followed by a negative reward. This finding indicates that attentional selection is driven by task-relevance and negative reward, possibly through interactions between limbic and attention networks.

eng
Keywords
  • Attentional priority
  • Reward
  • Salience
  • Spatial neglect
  • Cues
  • Humans
  • Motivation
  • Perceptual Disorders / etiology
  • Reaction Time
  • Reward
Citation (ISO format)
BOURGEOIS, Alexia et al. Task relevance and negative reward modulate the disengagement deficit of patients with spatial neglect. In: Neuropsychologia, 2022, vol. 175, p. 108365. doi: 10.1016/j.neuropsychologia.2022.108365
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Article (Published version)
Identifiers
ISSN of the journal0028-3932
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