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Ergebnisse 2 Einträge
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One approach to investigate psychophysiological processes occurring in the Concealed Information Test (CIT) is to use a parallel task, which engages specific mental activity in addition to the CIT. In the present study, the influence of an interfering n-back task on the physiological responses in a Concealed Information Test (CIT) was investigated. Forty participants underwent a mock-crime experiment with a modified CIT. In a within-subject design, the CIT was applied in blocks with and without an additional n-back task. Electrodermal activity (EDA), respiration line length (RLL), heart rate (HR), and finger pulse waveform length (FPWL) were registered. Reaction times in the n-back task and the CIT were recorded. The parallel task enhanced the differential EDA response to probe vs. irrelevant items, while it diminished the response differences for RLL and phasic HR. Results shed light upon working-memory-related processes in the CIT. The diverging effects of the interfering mental activity on electrodermal and cardiopulmonary measures, if replicable, might contribute to a better understanding of the psychophysiological responsiveness underlying the CIT.
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Although it is known that there are fundamental personality differences in the behavioral responses to emotional stimuli, traits have scarcely been investigated in this context by means of functional imaging studies. To maximize the variance with respect to personality, the authors tested 12 control subjects and 12 subjects who had sadomasochistic experiences with respect to the relationship between J. A. Gray's (1970) personality dimensions, the behavioral approach system (BAS) and the behavioral inhibition system (BIS), and brain activity in regions of interest. The BIS was associated with activity in numerous brain areas in response to fear, disgust, and erotic visual stimuli, whereas few associations could he detected between the BAS and brain activity in response to disgust and erotic stimuli.
Erkunden
Team
Eintragsart
Sprache
- Englisch (2)
Thema
- Inhibition, Psychological
- Adolescent (1)
- Adult (2)
- Attention/physiology (1)
- Brain (1)
- Brain Mapping (1)
- Cerebrovascular Circulation (1)
- Cognition/*physiology (1)
- Emotions (1)
- Female (2)
- Galvanic Skin Response/*physiology (1)
- Guilt (1)
- Heart Rate/*physiology (1)
- Hemodynamics (1)
- Humans (2)
- Magnetic Resonance Imaging (1)
- Male (2)
- Memory, Short-Term/*physiology (1)
- Perceptual Masking/*physiology (1)
- Personality (1)
- Personality Assessment (1)
- Photic Stimulation (1)
- Photic Stimulation/methods (1)
- Psychological Theory (1)
- Regression Analysis (1)
- Respiratory Rate/physiology (1)
- Young Adult (1)