Aim: This study investigated brain areas involved in the perception of dynamic facial expressions of emotion

Abler, Birgit

Doyen-Waldecker, Cornelia

Hofer, Christian

Hoffmann, Holger

Kessler, Henrik

Traue, Harald C.

English

PubMed

Aim:  This study investigated brain areas involved in the perception of dynamic facial expressions of emotion. Methods:  A group of 30 healthy subjects was measured with fMRI when passively viewing prototypical facial expressions of fear, disgust, sadness and happiness. Using morphing techniques, all faces were displayed as still images and also dynamically as a film clip with the expressions evolving from neutral to emotional. Results:  Irrespective of a specific emotion, dynamic stimuli selectively activated bilateral superior temporal sulcus, visual area V5, fusiform gyrus, thalamus and other frontal and parietal areas. Interaction effects of emotion and mode of presentation (static/dynamic) were only found for the expression of happiness, where static faces evoked greater activity in the medial prefrontal cortex. Conclusions:  Our results confirm previous findings on neural correlates of the perception of dynamic facial expressions and are in line with studies showing the importance of the superior temporal sulcus and V5 in the perception of biological motion. Differential activation in the fusiform gyrus for dynamic stimuli stands in contrast to classical models of face perception but is coherent with new findings arguing for a more general role of the fusiform gyrus in the processing of socially relevant stimuli.Ziel:  Diese Studie untersuchte die Hirnareale, die bei der Wahrnehmung von dynamischen Gesichtsausdrücken von Emotionen aktiv sind. Methoden:  N=30 gesunde Probanden wurden mittels fMRT untersucht während sie prototypische Gesichtsausdrücke der Emotionen Angst, Ekel, Traurigkeit und Freude sahen. Mittels Morphing-Techniken wurden alle Gesichter sowohl als statische Portraitaufnahmen als auch als dynamische Filme präsentiert, in denen sich der Gesichtsausdruck von neutral zu emotional entwickelt. Ergebnisse:  Unabhängig von der jeweils gezeigten Emotion zeigte sich bei dynamischen Stimuli (im Vergleich zu statischen) Aktivität in folgenden Arealen: bilateraler superiorer Temporalsulcus, visuelles Areal V5, Gyrus fusiformis, Thalamus und weitere frontale und parietale Gebiete. Interaktionseffekte zwischen gezeigter Emotion und Modus der Präsentation (statisch/dynamisch) zeigten sich nur für den Ausdruck von Freude. Dort lösten die statischen Gesichter vermehrt Aktivität im medialen prefrontalen Kortex aus. Fazit:  Unsere Ergebnisse bestätigen vorherige Untersuchungen bezüglich der neuronalen Korrelate der Wahrnehmung dynamischer emotionaler Gesichtsausdrücke und stehen im Einklang mit Studien, welche die Bedeutung des superioren Temporalsulcus und V5 für die Wahrnehmung biologischer Bewegung zeigten. Die spezifische Aktivität des Gyrus fusiformis bei der Präsentation dynamischer Stimuli steht zwar im Kontrast zu klassischen Modellen der Gesichtswahrnehmung, passt jedoch zu neuen Befunden, die für eine allgemeine Funktion des Gyrus fusiformis bei der Verarbeitung sozial relevanter Stimuli sprechen

Kessler, H

Doyen-Waldecker, C

Hofer, C

Hoffmann, H

Traue, HC

Abler, B

German Medical Science

Neuronale Korrelate der Wahrnehmung dynamischer versus statischer emotionaler Gesichtsausdrücke

1016/j.tics.2004.01.004 Corresponding author: Henrik Kessler,

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Neural correlates of the perception of dynamic versus static facial expressions of emotion

Neural correlates of the perception of dynamic versus static facial expressions of emotion

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German Medical Science