Eye Movements and Verbal Report in a Single Case of Visual Neglect

Benson, Valerie; Ietswaart, Magdalena; Milner, David

Abstract

In this single case study, visuospatial neglect patient P1 demonstrated a dissociation between an intact ability to make appropriate reflexive eye movements to targets in the neglected field with latencies of <400 ms, while failing to report targets presented at such durations in a separate verbal detection task. In contrast, there was a failure to evoke the usually robust Remote Distractor Effect in P1, even though distractors in the neglected field were presented at above threshold durations. Together those data indicate that the tight coupling that is normally shown between attention and eye movements appears to be disrupted for low-level orienting in P1. A comparable disruption was also found for high-level cognitive processing tasks, namely reading and scene scanning. The findings are discussed in relation to sampling, attention and awareness in neglect.

Citation

Benson, V., Ietswaart, M., & Milner, D. (2012). Eye Movements and Verbal Report in a Single Case of Visual Neglect. PLoS ONE, 7(8), Article e43743. https://doi.org/10.1371/journal.pone.0043743

• Journal Article Type: Article
• Acceptance Date: Jul 24, 2012
• Online Publication Date: Aug 24, 2012
• Publication Date: Aug 24, 2012
• Deposit Date: May 10, 2018
• Publicly Available Date: May 10, 2018
• Journal: PLoS ONE
• Electronic ISSN: 1932-6203
• Publisher: Public Library of Science
• Peer Reviewed: Peer Reviewed
• Volume: 7
• Issue: 8
• Article Number: e43743
• DOI: https://doi.org/10.1371/journal.pone.0043743
• Public URL: https://durham-repository.worktribe.com/output/1332148