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- Lundgren, Jesper, 1970, et al.
(författare)
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Psychophysiological reactions in dental phobic patients during video stimulation.
- 2001
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Ingår i: European journal of oral sciences. - : Wiley. - 0909-8836. ; 109:3, s. 172-7
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Tidskriftsartikel (refereegranskat)abstract
- Electromyography (EMG) reflecting forehead muscle tension, heart rate (HR) and skin conductance (SC) were continuously recorded in dental phobic subjects (n = 126) and controls (n = 25) during exposure of dental and neutral video scenes in order to explore the relationship between dental fear and psychophysiological responses. This relationship is far from well established, and the present investigation was performed to contribute to the understanding of the psychophysiology of dental fear. Dental phobics had a mean anxiety level of 17.3 as measured by Corah's Dental Anxiety Scale (DAS) and refused conventional dental treatment. Control subjects reported regular dental treatment and a DAS score below population average (DAS < 8). Psychophysiological data was reduced to level (mean) and reactivity (means of intraindividual variations). Results showed that physiologic reactions to fear-relevant conditions measured by HR and EMG reflected degree of dental fear, and that neutral conditions, when presented for the second and third time, induced lower psychophysiologic reactions in phobics than in controls. Recordings of SC indicated that dental phobics may differ from individuals suffering from other types of specific phobia by showing weakened autonomic responsiveness to threat.
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- Lundgren, Jesper, 1970, et al.
(författare)
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Psychophysiological reactions in dental phobic patients with direct vs. indirect fear acquisition
- 2004
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Ingår i: JOURNAL OF BEHAVIOR THERAPY AND EXPERIMENTAL PSYCHIATRY. - : Elsevier BV. - 0005-7916. ; 35:1, s. 3-12
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Tidskriftsartikel (refereegranskat)abstract
- Dental phobic patients with reported traumatic experiences at onset of dental anxiety were compared to subjects with an indirect fear acquisition in their psychophysiological responses to video scenes showing dental procedures. It has been suggested that individuals with conditioned fear would respond with higher levels of physiological arousal in response to threat compared to subjects with indirect fear acquisition. Although the overall pattern indicates support for this hypothesis, subjects grouped on the basis of their reported fear-etiology did not statistically differ in recorded muscle tension, heart rate or skin conductance reactions to fear-provoking conditions.
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