Abstract
Subject’s state during the experiment and his or her perception of the experimental procedure are usually ignored, although they may potentially considerably change the pattern of results. In this study, the effect of subject’s state on cortical oscillatory responses to emotional facial expressions was investigated in a sample of 40 subjects aged 17–32 years. The strength of oscillatory responses in all frequency bands was lower in subjects who felt tenseness, experienced negative emotions, and did not like the experimental procedure. Moreover, in these subjects, personality-related differences in cortical oscillatory responses were not found, though they were found in subjects who reported being relaxed and liked the procedure. The observed individual differences in subject’s state partly depended on personality and partly on other factors that preexisted before the experiment. These data show that subject’s state is an important contributor to observed oscillatory dynamics and should be taken into account.
References
2002). Recognizing emotion from facial expressions: Psychological and neurological mechanisms. Behavioral and Cognitive Neuroscience Reviews, 1, 21–61.
(1996). Pre- and post-stimulus processes in affective task and event-related desynchronization: Do they discriminate anxiety coping styles? International Journal of Psychophysiology, 24, 197–212.
(2006). EEG correlates (event-related desynchronization) of emotional face elaboration: A temporal analysis. Neuroscience Letters, 392, 118–123.
(2003). Face-selective processing and the effect of pleasant and unpleasant emotional expressions on ERP correlates. International Journal of Psychophysiology, 49, 67–74.
(1984). Extraversion und EEG: Ein Forschungsparadigma in der Sackgasse?
([Extraversion and EEG: A dead-end paradigm?] In , Brennpunkte der Personlichkeitsforschung (pp. 157–189). Gottingen, Germany: Hogrefe.2006). Principles of oscillatory brain dynamics and a treatise of recognition of faces and facial expressions. Progress in Brain Research, 159, 43–62.
(2006). Complex slow potential generators in a simplified attention paradigm. International Journal of Psychophysiology, 61, 149–157.
(1992). The aggression questionnaire. Journal of Personality and Social Psychology, 63, 452–459.
(2004). EEGLAB: An open source toolbox for analysis of single-trial EEG dynamics including independent component analysis. Journal of Neuroscience Methods, 134, 9–21.
(2007). Speech anxiety and rapid emotional reactions to angry and happy facial expressions. Scandinavian Journal of Psychology, 48, 321–328.
(1976). Pictures of facial affect. Palo Alto, CA: Consulting Psychologist Press.
(2005). Event-related desynchronization in the EEG during emotional and cognitive information processing: Differential effects of extraversion. Biological Psychology, 70, 152–160.
(1983). Electroencephalographic studies of extraversion-introversion: A case study in the psychophysiology of individual differences. Personality and Individual Differences, 4, 371–380.
(2007). Emotional face expressions are differentiated with brain oscillations. International Journal of Psychophysiology, 64, 91–100.
(2006). Self-reported aggression and the perception of anger in facial expression photos. Journal of Psychology: Interdisciplinary and Applied, 140, 255–267.
(1979). A simple sequentially rejective multiple test procedure. Scandinavian Journal of Statistics, 6, 65–70.
(2007). Human gamma-frequency oscillations associated with attention and memory. Trends in Neurosciences, 30, 317–324.
(2001). Neural substrates of facial emotion processing using fMRI. Cognitive Brain Research, 11, 213–226.
(1999). EEG alpha and theta oscillations reflect cognitive and memory performance: A review and analysis. Brain Research Reviews, 29, 169–195.
(2007). EEG alpha oscillations: The inhibition-timing hypothesis. Brain Research Reviews, 53, 63–88.
(2007). Motivation, emotion, and their inhibitory control mirrored in brain oscillations. Neuroscience & Biobehavioral Reviews, 31, 377–395.
(2008). Anxiety and oscillatory responses to emotional facial expressions. Brain Research, 1227, 174–188.
(2008). Personality-linked biases in perception of emotional facial expressions. Personality and Individual Differences, 44, 1093–1104.
(2009). Hostility- and gender-related differences in oscillatory responses to emotional facial expressions. Aggressive Behavior, 35, 502–513.
(2004). Alpha oscillations as a correlate of trait anxiety. International Journal of Psychophysiology, 53, 147–160.
(2005). Uncertainty, anxiety and brain oscillations. Neuroscience Letters, 387, 121–125.
(2006). Alpha synchronization and anxiety: Implications for inhibition vs. alertness hypotheses. International Journal of Psychophysiology, 59, 151–158.
(2009). Event-related delta and theta synchronization during explicit and implicit emotion processing. Neuroscience, 164, 1588–1600.
(2010). Gender differences in implicit and explicit processing of emotional facial expressions as revealed by event-related theta synchronization. Emotion, 10, 678–687.
(2002). Cynical hostility and the accuracy of decoding facial expressions of emotions. Journal of Behavioral Medicine, 25, 285–292.
(1993). Auditory event-related dynamics of the EEG spectrum and effects of exposure to tones. Electroencephalography and Clinical Neurophysiology, 86, 283–293.
(1999). The personality theories of H. J. Eysenck and J. A. Gray: A comparative review. Personality and Individual Differences, 26, 583–626.
(1984). Extraversion and the EEG. I: An evaluation of Gale’s hypothesis. Biological Psychology, 19, 95–112.
(2007). Activity in medial prefrontal cortex during cognitive evaluation of threatening stimuli as a function of personality style. Brain Research Bulletin, 74, 250–257.
(1970). Manual for the state-trait anxiety inventory. Palo Alto, CA: Consulting Psychologists Press.
(2001). Attentional biases for angry faces: Relationships to trait anger and anxiety. Cognition and Emotion, 15, 279–297.
(2003). Common and distinct neural responses during direct and incidental processing of multiple facial emotions. NeuroImage, 20, 84–97.
(1991). Modulation of early auditory processing during selective listening to rapidly presented tones. Electroencephalography and Clinical Neurophysiology, 79, 170–191.
(1996). A unified statistical approach or determining significant signals in images of cerebral activation. Human Brain Mapping, 4, 58–73.
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