Normal and impaired reflexive orienting of attention after central nonpredictive cues

Mario Bonato, Konstantinos Priftis, Roberto Marenzi, Marco Zorzi

Research output: Contribution to journalArticle

Abstract

Recent studies suggest that stimuli with directional meaning can trigger lateral shifts of visuospatial attention when centrally presented as noninformative cues. We investigated covert orienting in healthy participants and in a group of 17 right braindamaged patients (9 with hemispatial neglect) comparing arrows, eye gaze, and digits as central nonpredictive cues in a detection task. Orienting effects elicited by arrows and eye gaze were overall consistent in healthy participants and in right brain-damaged patients, whereas digit cues were ineffective. Moreover, patients with neglect showed, at the shortest delay between cue and target, a disengage deficit for arrow cueing whose magnitude was predicted by neglect severity. We conclude that the peculiar form of attentional orienting triggered by the directional meaning of arrow cues presents some features previously thought to characterize only the stimulus-driven (exogenous) orienting to noninformative peripheral cues.

Original languageEnglish
Pages (from-to)745-759
Number of pages15
JournalJournal of Cognitive Neuroscience
Volume21
Issue number4
DOIs
Publication statusPublished - Apr 2009

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ASJC Scopus subject areas

  • Cognitive Neuroscience

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