Face-selective processing and the effect of pleasant and unpleasant emotional expressions on ERP correlates.

Previous studies have revealed that decoding of facial-expressions starts very early in the brain ( approximately 180 ms post-stimulus) and might be processed separately from the basic stage of face perception. In order to explore brain potentials (ERPs) related to decoding of facial-expressions and the effect of emotional valence of the stimulus, we analyzed 18 normal subjects. Faces with five basic emotional expressions (fear, anger, surprise, happiness, sadness) and neutral stimulus were presented in random order. The results demonstrated that an emotional face elicited a negative peak at approximately 230 ms (N230), distributed mainly over the posterior site for each emotion. The electrophysiological activity observed may represent specific cognitive processing underlying the decoding of emotional facial-expressions. Nevertheless, differences in peak amplitude were observed for high-arousal negative expressions compared with positive (happiness) and low-arousal expressions (sadness). N230 amplitude increased in response to anger, fear and surprise, suggesting that subjects' ERP variations are affected by experienced emotional intensity, related to arousal and unpleasant value of the stimulus.

[1]  Faces in their social and biological context , 1998 .

[2]  M Eimer,et al.  Does the face‐specific N170 component reflect the activity of a specialized eye processor? , 1998, Neuroreport.

[3]  A. Young,et al.  Face and Mind , 1998 .

[4]  T. Sejnowski,et al.  Removing electroencephalographic artifacts by blind source separation. , 2000, Psychophysiology.

[5]  M. Erb,et al.  Are emotions contagious? Evoked emotions while viewing emotionally expressive faces: quality, quantity, time course and gender differences , 2001, Psychiatry Research.

[6]  M. Bradley,et al.  Looking at pictures: affective, facial, visceral, and behavioral reactions. , 1993, Psychophysiology.

[7]  K. Bötzel,et al.  Electric brain potentials evoked by pictures of faces and non-faces: a search for “face-specific” EEG-potentials , 2004, Experimental Brain Research.

[8]  N. Frijda.  Emotions are functional, most of the time , 1994 .

[9]  Richard J. Davidson,et al.  The neural circuitry of emotion and affective style: prefrontal cortex and amygdala contributions , 2001 .

[10]  P. Ekman.  Pictures of Facial Affect , 1976 .

[11]  R. Adolphs,et al.  The human amygdala in social judgment , 1998, Nature.

[12]  A. Calder.  Facial Emotion Recognition after Bilateral Amygdala Damage: Differentially Severe Impairment of Fear , 1996 .

[13]  U. Dimberg,et al.  Facial reactions: Rapidly evoked emotional responses , 1997 .

[14]  K. Linkenkaer-Hansen,et al.  Face-selective processing in human extrastriate cortex around 120 ms after stimulus onset revealed by magneto- and electroencephalography , 1998, Neuroscience Letters.

[15]  C. Nelson,et al.  Event-related potentials to emotional and neutral stimuli. , 1990, Journal of clinical and experimental neuropsychology.

[16]  D Lehmann,et al.  Affective attitudes to face images associated with intracerebral EEG source location before face viewing. , 1999, Brain research. Cognitive brain research.

[17]  K. Morita,et al.  Effects of facial affect recognition on the auditory P300 in healthy subjects , 2001, Neuroscience Research.

[18]  D. Maurer,et al.  The many faces of configural processing , 2002, Trends in Cognitive Sciences.

[19]  Sakiko Yoshikawa,et al.  Emotional expression boosts early visual processing of the face: ERP recording and its decomposition by independent component analysis , 2001, Neuroreport.

[20]  Andreas J Fallgatter,et al.  Face-specific event-related potential in humans is independent from facial expression. , 2002, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.

[21]  R. Lazarus.  Emotion and Adaptation , 1991 .

[22]  Deborah J. Hellawell,et al.  Facial expression processing after amygdalotomy , 1996, Neuropsychologia.

[23]  M. Bradley,et al.  Fleeting images: a new look at early emotion discrimination. , 2001, Psychophysiology.

[24]  N. Frijda,et al.  Relations among emotion, appraisal, and emotional action readiness , 1989 .

[25]  Sophie K. Scott,et al.  Impaired auditory recognition of fear and anger following bilateral amygdala lesions , 1997, Nature.

[26]  P. Ekman,et al.  Approaches To Emotion , 1985 .

[27]  S. Stone-Elander,et al.  Functional neuroanatomy of visually elicited simple phobic fear: additional data and theoretical analysis. , 1995, Psychophysiology.

[28]  P. Ekman,et al.  The nature of emotion: Fundamental questions. , 1994 .

[29]  R. Adolphs,et al.  Impaired recognition of emotion in facial expressions following bilateral damage to the human amygdala , 1994, Nature.

[30]  E. Halgren,et al.  Human brain potentials related to the emotional expression, repetition, and gender of faces , 1998, Psychobiology.

[31]  S. Rauch,et al.  Masked Presentations of Emotional Facial Expressions Modulate Amygdala Activity without Explicit Knowledge , 1998, The Journal of Neuroscience.

[32]  R. Dolan,et al.  Common effects of emotional valence, arousal and attention on neural activation during visual processing of pictures , 1999, Neuropsychologia.

[33]  R. Ihl,et al.  Electrophysiological correlates of emotional and structural face processing in humans , 2000, Neuroscience Letters.

[34]  Miller Ga,et al.  Affective valence and information processing. , 1987 .

[35]  A. Young,et al.  A theoretical perspective for understanding face recognition , 1998 .

[36]  J. Rohrbaugh,et al.  Current trends in event-related potential research , 1987 .

[37]  Joseph E LeDoux.  The Emotional Brain: The Mysterious Underpinnings of Emotional Life , 1996 .

[38]  R. Dolan,et al.  Conscious and unconscious emotional learning in the human amygdala , 1998, Nature.

[39]  U Dimberg,et al.  Nonconscious associative learning: Pavlovian conditioning of skin conductance responses to masked fear-relevant facial stimuli. , 1994, Psychophysiology.

[40]  E. Halgren,et al.  LOCALISED FACE PROCESSING BY THE HUMAN PREFRONTAL CORTEX: FACE-SELECTIVE INTRACEREBRAL POTENTIALS AND POST-LESION DEFICITS , 2000, Cognitive neuropsychology.

[41]  M. Rugg,et al.  Electrophysiology of Mind. , 1996 .

[42]  J. T. Marsh,et al.  Judgments of emotion in words and faces: ERP correlates. , 1987, International journal of psychophysiology : official journal of the International Organization of Psychophysiology.

[43]  L. A. Pervin.  Handbook of Personality: Theory and Research , 1992 .

[44]  T. Allison,et al.  Electrophysiological Studies of Face Perception in Humans , 1996, Journal of Cognitive Neuroscience.

[45]  R A McCarthy,et al.  Prosopagnosia and structural encoding of faces: evidence from event-related potentials. , 1999, Neuroreport.