Automatic Processing of Changes in Facial Emotions in Dysphoria : A Magnetoencephalography Study
Xu, Q., Ruohonen, E., Ye, C., Li, X., Kreegipuu, K., Stefanics, G., Luo, W., & Astikainen, P. (2018). Automatic Processing of Changes in Facial Emotions in Dysphoria : A Magnetoencephalography Study. Frontiers in Human Neuroscience, 12, Article 186. https://doi.org/10.3389/fnhum.2018.00186
Julkaistu sarjassa
Frontiers in Human NeuroscienceTekijät
Päivämäärä
2018Oppiaine
PsykologiaMonitieteinen aivotutkimuskeskusHyvinvoinnin tutkimuksen yhteisöPsychologyCentre for Interdisciplinary Brain ResearchSchool of WellbeingTekijänoikeudet
© 2018 Xu, Ruohonen, Ye, Li, Kreegipuu, Stefanics, Luo and Astikainen.
It is not known to what extent the automatic encoding and change detection
of peripherally presented facial emotion is altered in dysphoria. The negative bias
in automatic face processing in particular has rarely been studied. We used
magnetoencephalography (MEG) to record automatic brain responses to happy and
sad faces in dysphoric (Beck’s Depression Inventory ≥ 13) and control participants.
Stimuli were presented in a passive oddball condition, which allowed potential negative
bias in dysphoria at different stages of face processing (M100, M170, and M300) and
alterations of change detection (visual mismatch negativity, vMMN) to be investigated.
The magnetic counterpart of the vMMN was elicited at all stages of face processing,
indexing automatic deviance detection in facial emotions. The M170 amplitude was
modulated by emotion, response amplitudes being larger for sad faces than happy
faces. Group differences were found for the M300, and they were indexed by two
different interaction effects. At the left occipital region of interest, the dysphoric group
had larger amplitudes for sad than happy deviant faces, reflecting negative bias in
deviance detection, which was not found in the control group. On the other hand, the
dysphoric group showed no vMMN to changes in facial emotions, while the vMMN was
observed in the control group at the right occipital region of interest. Our results indicate
that there is a negative bias in automatic visual deviance detection, but also a general
change detection deficit in dysphoria.
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Frontiers Research FoundationISSN Hae Julkaisufoorumista
1662-5161Julkaisu tutkimustietojärjestelmässä
https://converis.jyu.fi/converis/portal/detail/Publication/28049026
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