Published in:
01-01-2009 | Basic Neurosciences, Genetics and Immunology - Short Communication
Change detection related to peripheral facial expression: an electroencephalography study
Authors:
Barbara Khittl, Herbert Bauer, Peter Walla
Published in:
Journal of Neural Transmission
|
Issue 1/2009
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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.