Evaluation of pareidolias in Parkinson’s disease using eye-tracking metrics and presaccadic potentials

Takeaway

  • Pareidolias may contribute to the development of hallucinations in Parkinson’s disease (PD), as shown by longer fixation and visit durations of areas of interest and activation of cortical brain areas that accompany visuo-perceptual deficits.

Why this matters

    Individuals with PD frequently experience visual hallucinations which can start as misperceptions of meaningful objects or faces arising from ambiguous forms known as ‘pareidolias’. Understanding the mechanism of pareidolias may be clinically useful in identifying hallucinatory tendencies.