Change detection related to peripheral facial expression: an electroencephalography study

J Neural Transm (Vienna). 2009 Jan;116(1):67-70. doi: 10.1007/s00702-008-0125-5. Epub 2008 Sep 20.

Abstract

The objective is to study the change detection of emotion expression by electroencephalography (EEG). A visual letter task was combined with two neutral faces. After a short break another letter task occurred whilst the peripheral faces remained or randomly changed to joy, anger or disgust. Study participants responded whether they had perceived a change in emotion expression or not. Explicit change detection elicited more positive-going EEG amplitudes than change blindness between 750 and 900 ms. A change to disgust elicited largest effects. Furthermore, evidence for implicit change detection occurred.

Publication types

  • Randomized Controlled Trial

MeSH terms

  • Adult
  • Analysis of Variance
  • Attention / physiology*
  • Brain / physiology*
  • Brain Mapping
  • Electroencephalography / methods
  • Facial Expression*
  • Female
  • Humans
  • Male
  • Pattern Recognition, Visual / physiology*
  • Photic Stimulation / methods
  • Time Factors
  • Young Adult