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Details

Autor(en) / Beteiligte
Titel
Large lateralized EDAN‐like brain potentials in a gaze‐shift detection task
Ist Teil von
  • Psychophysiology, 2019-07, Vol.56 (7), p.e13361-n/a
Ort / Verlag
United States: Blackwell Publishing Ltd
Erscheinungsjahr
2019
Link zum Volltext
Quelle
EBSCOhost Psychology and Behavioral Sciences Collection
Beschreibungen/Notizen
  • Attentional cueing tasks using gaze direction as spatial cues have sometimes yielded an early directing attention negativity (EDAN) component in the ERP, presumably reflecting the initial orienting toward the cued location. However, other studies have failed to identify an EDAN component for gaze cues, yielding an inconsistent picture. In the present study, we re‐examined the EDAN to gaze cueing, using a continuous task where the specific direction of the gaze changes was task irrelevant. Face stimuli changed gaze direction several times during each trial between direct, left‐, and right‐averted positions. Participants counted the number of gaze shifts during the trial. Results showed an unusually large EDAN‐like ERP asymmetry at posterior scalp sites that was of similar amplitude for large and small gaze shifts into the periphery. Shifts from an averted position toward a direct gaze elicited a qualitatively similar but smaller effect than shifts into the periphery. Together, these findings shed new light on gaze‐elicited spatial attention as they indicate a reflexive attention orienting, following the direction of gaze motion, even when the gaze direction itself is irrelevant for the task. The early directing attention negativity (EDAN) in the ERP is taken to reflect orienting of spatial attention toward cued locations. As yet, EDAN findings for directional eye gaze cues have been inconsistent. We show that EDAN in a continuous real lifelike paradigm with a nonsocial gaze‐change counting task is (a) exceptionally large, (b) independent of emotional expressions of the stimulus face, and (c) present not only for gaze shifts of the stimulus face toward lateral spatial positions but also for shifts from lateral toward central gaze directions. Our findings provide new perspectives for research on gaze‐cued spatial attention.

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