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Related Experiment Video

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An Operant Intra-/Extra-dimensional Set-shift Task for Mice
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Large lateralized EDAN-like brain potentials in a gaze-shift detection task.

K Kirk Driller1, T Stephani2, O Dimigen2

  • 1Department of Psychology and Behavioural Sciences, Aarhus University, Aarhus, Denmark.

Psychophysiology
|March 9, 2019
PubMed
Summary
This summary is machine-generated.

Researchers found that the brain reflexively orients attention to gaze motion, even when gaze direction is task-irrelevant. This study clarifies early directing attention negativity (EDAN) in response to gaze cues.

Keywords:
ADANEDANN2pcgaze cueinglateralized ERPsspatial attention

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Area of Science:

  • Cognitive Neuroscience
  • Visual Attention
  • Event-Related Potentials (ERPs)

Background:

  • Attentional cueing tasks using gaze direction sometimes elicit an early directing attention negativity (EDAN) component in event-related potentials (ERPs).
  • This EDAN component is thought to reflect initial attention orienting toward cued locations.
  • Previous studies show inconsistent findings regarding the presence of EDAN for gaze cues.

Purpose of the Study:

  • To re-examine the early directing attention negativity (EDAN) component in response to gaze cueing.
  • To investigate attention orienting mechanisms when gaze direction is task-irrelevant.

Main Methods:

  • Utilized a continuous attentional cueing task with face stimuli that repeatedly changed gaze direction.
  • Participants performed a task where counting gaze shifts was the primary objective, making gaze direction irrelevant.
  • Measured electroencephalography (EEG) to record event-related potentials (ERPs) and analyze scalp asymmetries.

Main Results:

  • Observed a significant EDAN-like ERP asymmetry at posterior scalp sites.
  • This asymmetry was consistently present for both large and small gaze shifts into the periphery.
  • Gaze shifts from averted to direct gaze elicited a similar but smaller effect compared to peripheral shifts.

Conclusions:

  • Findings indicate a reflexive attention orienting mechanism that follows the direction of gaze motion.
  • This reflexive orienting occurs even when the specific gaze direction is irrelevant to the ongoing task.
  • The study provides new insights into the dynamics of gaze-elicited spatial attention and EDAN.