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Eye-blink rate predicts individual differences in pseudoneglect.

Heleen A Slagter1, Richard J Davidson, Rachel Tomer

  • 1Waisman Laboratory for Brain Imaging and Behavior, University of Wisconsin, Madison, USA. h.a.slagter@uva.nl

Neuropsychologia
|December 29, 2009
PubMed
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Healthy individuals with higher spontaneous eye-blink rates (EBR) show a stronger rightward spatial attentional bias. This suggests dopamine may influence this bias, linking eye-blinking to central dopaminergic function and attention.

Area of Science:

  • Neuroscience
  • Cognitive Psychology
  • Psychophysics

Background:

  • Healthy individuals exhibit a spatial attentional bias, termed pseudoneglect, showing inattention to one visual field side.
  • Dopamine has been implicated in spatial attention asymmetries in animal models and patient studies.

Purpose of the Study:

  • To investigate the relationship between spatial attentional bias and spontaneous eye-blink rate (EBR) in healthy individuals.
  • To explore eye-blink rate as a potential non-invasive marker for central dopaminergic function related to attention.

Main Methods:

  • Assessed spontaneous eye-blink rate (EBR) in healthy participants under resting conditions.
  • Administered a spatial attention task to measure attentional bias.
  • Correlated individual EBR with performance on the attention task.

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Last Updated: Jun 17, 2026

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Main Results:

  • Individuals with higher resting eye-blink rates demonstrated a greater preference for the right side of the visual display.
  • A positive correlation was observed between spontaneous EBR and the magnitude of the rightward attentional bias.

Conclusions:

  • Spontaneous eye-blink rate may serve as a proxy for central dopaminergic activity influencing spatial attention.
  • Findings support the role of dopaminergic circuit asymmetries in pseudoneglect within healthy populations.