The perception of dynamic and static facial expressions of happiness and disgust investigated by ERPs and fMRI constrained source analysis
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The perception of dynamic and static facial expressions of happiness and disgust investigated by ERPs and fMRI constrained source analysis. / Trautmann-Lengsfeld, Sina Alexa; Domínguez-Borràs, Judith; Escera, Carles; Herrmann, Manfred; Fehr, Thorsten.
In: PLOS ONE, Vol. 8, No. 6, 01.01.2013, p. e66997.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - The perception of dynamic and static facial expressions of happiness and disgust investigated by ERPs and fMRI constrained source analysis
AU - Trautmann-Lengsfeld, Sina Alexa
AU - Domínguez-Borràs, Judith
AU - Escera, Carles
AU - Herrmann, Manfred
AU - Fehr, Thorsten
PY - 2013/1/1
Y1 - 2013/1/1
N2 - A recent functional magnetic resonance imaging (fMRI) study by our group demonstrated that dynamic emotional faces are more accurately recognized and evoked more widespread patterns of hemodynamic brain responses than static emotional faces. Based on this experimental design, the present study aimed at investigating the spatio-temporal processing of static and dynamic emotional facial expressions in 19 healthy women by means of multi-channel electroencephalography (EEG), event-related potentials (ERP) and fMRI-constrained regional source analyses. ERP analysis showed an increased amplitude of the LPP (late posterior positivity) over centro-parietal regions for static facial expressions of disgust compared to neutral faces. In addition, the LPP was more widespread and temporally prolonged for dynamic compared to static faces of disgust and happiness. fMRI constrained source analysis on static emotional face stimuli indicated the spatio-temporal modulation of predominantly posterior regional brain activation related to the visual processing stream for both emotional valences when compared to the neutral condition in the fusiform gyrus. The spatio-temporal processing of dynamic stimuli yielded enhanced source activity for emotional compared to neutral conditions in temporal (e.g., fusiform gyrus), and frontal regions (e.g., ventromedial prefrontal cortex, medial and inferior frontal cortex) in early and again in later time windows. The present data support the view that dynamic facial displays trigger more information reflected in complex neural networks, in particular because of their changing features potentially triggering sustained activation related to a continuing evaluation of those faces. A combined fMRI and EEG approach thus provides an advanced insight to the spatio-temporal characteristics of emotional face processing, by also revealing additional neural generators, not identifiable by the only use of an fMRI approach.
AB - A recent functional magnetic resonance imaging (fMRI) study by our group demonstrated that dynamic emotional faces are more accurately recognized and evoked more widespread patterns of hemodynamic brain responses than static emotional faces. Based on this experimental design, the present study aimed at investigating the spatio-temporal processing of static and dynamic emotional facial expressions in 19 healthy women by means of multi-channel electroencephalography (EEG), event-related potentials (ERP) and fMRI-constrained regional source analyses. ERP analysis showed an increased amplitude of the LPP (late posterior positivity) over centro-parietal regions for static facial expressions of disgust compared to neutral faces. In addition, the LPP was more widespread and temporally prolonged for dynamic compared to static faces of disgust and happiness. fMRI constrained source analysis on static emotional face stimuli indicated the spatio-temporal modulation of predominantly posterior regional brain activation related to the visual processing stream for both emotional valences when compared to the neutral condition in the fusiform gyrus. The spatio-temporal processing of dynamic stimuli yielded enhanced source activity for emotional compared to neutral conditions in temporal (e.g., fusiform gyrus), and frontal regions (e.g., ventromedial prefrontal cortex, medial and inferior frontal cortex) in early and again in later time windows. The present data support the view that dynamic facial displays trigger more information reflected in complex neural networks, in particular because of their changing features potentially triggering sustained activation related to a continuing evaluation of those faces. A combined fMRI and EEG approach thus provides an advanced insight to the spatio-temporal characteristics of emotional face processing, by also revealing additional neural generators, not identifiable by the only use of an fMRI approach.
KW - Adolescent
KW - Adult
KW - Analysis of Variance
KW - Brain
KW - Brain Mapping
KW - Electroencephalography
KW - Emotions
KW - Evoked Potentials
KW - Face
KW - Facial Expression
KW - Female
KW - Happiness
KW - Humans
KW - Kinetics
KW - Magnetic Resonance Imaging
KW - Photic Stimulation
KW - Time Factors
KW - Visual Perception
KW - Young Adult
U2 - 10.1371/journal.pone.0066997
DO - 10.1371/journal.pone.0066997
M3 - SCORING: Journal article
C2 - 23818974
VL - 8
SP - e66997
JO - PLOS ONE
JF - PLOS ONE
SN - 1932-6203
IS - 6
ER -
