Emotional facial expressions evoke faster orienting responses, but weaker emotional responses at neural and behavioural levels compared to scenes: A simultaneous EEG and facial EMG study

Autor: Cornelia Herbert, Aimee Mavratzakis, Peter Walla
Rok vydání: 2016
Předmět:
Male
genetic structures
Emotions
Happiness
Facial Muscles
Electromyography
Electroencephalography
Functional Laterality
0302 clinical medicine
ddc:150
Spontaneous facial EMG
Affective processing
N100
medicine.diagnostic_test
05 social sciences
Fear
Galvanic Skin Response
Facial Expression
Facial muscles
medicine.anatomical_structure
N170
Neurology
Female
Psychology
Facial electromyography
psychological phenomena and processes
Cognitive psychology
Cognitive Neuroscience
Stimulus (physiology)
Affect (psychology)
050105 experimental psychology
Young Adult
03 medical and health sciences
Orientation
medicine
Humans
0501 psychology and cognitive sciences
Emotion
Facial expression
Faces and scenes
Early posterior negativity
Affect
Face
Evoked Potentials
Visual
Photic Stimulation
Psychomotor Performance
030217 neurology & neurosurgery
Zdroj: NeuroImage. 124:931-946
ISSN: 1053-8119
DOI: 10.1016/j.neuroimage.2015.09.065
Popis: In the current study, electroencephalography (EEG) was recorded simultaneously with facial electromyography (fEMG) to determine whether emotional faces and emotional scenes are processed differently at the neural level. In addition, it was investigated whether these differences can be observed at the behavioural level via spontaneous facial muscle activity. Emotional content of the stimuli did not affect early P1 activity. Emotional faces elicited enhanced amplitudes of the face-sensitive N170 component, while its counterpart, the scene-related N100, was not sensitive to emotional content of scenes. At 220–280ms, the early posterior negativity (EPN) was enhanced only slightly for fearful as compared to neutral or happy faces. However, its amplitudes were significantly enhanced during processing of scenes with positive content, particularly over the right hemisphere. Scenes of positive content also elicited enhanced spontaneous zygomatic activity from 500–750ms onwards, while happy faces elicited no such changes. Contrastingly, both fearful faces and negative scenes elicited enhanced spontaneous corrugator activity at 500–750ms after stimulus onset. However, relative to baseline EMG changes occurred earlier for faces (250ms) than for scenes (500ms) whereas for scenes activity changes were more pronounced over the whole viewing period. Taking into account all effects, the data suggests that emotional facial expressions evoke faster attentional orienting, but weaker affective neural activity and emotional behavioural responses compared to emotional scenes.
Databáze: OpenAIRE
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