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Augmentation of auditory evoked potentials in somatization disorder
L James1, E Gordon, C Kraiuhin
1Department of Psychiatry, Westmead Hospital, NSW, Australia.
Journal of Psychiatric Research
|January 1, 1990
Summary
Patients with somatization disorder show an enhanced central nervous system response to sensory input, indicating potential attention and sensory regulation disturbances. This may explain their chronic and multiple physical complaints.
Area of Science:
- Neuroscience
- Psychiatry
- Clinical Psychology
Background:
- Somatization disorder is characterized by multiple, chronic physical complaints.
- Previous research suggests impaired habituation and over-responsiveness to stimuli in these patients.
- Understanding sensory processing is crucial for explaining disorder symptoms.
Purpose of the Study:
- To investigate sensory input regulation in somatization disorder.
- To compare auditory evoked potentials between patients and controls.
- To explore the relationship between sensory processing and disorder characteristics.
Main Methods:
- Auditory evoked potentials (AEPs) were measured in 10 somatization disorder patients and 10 controls.
- The change in P1-N1 amplitude was analyzed as a function of stimulus intensity.
- Comparison of AEPs between patient and control groups.
Main Results:
- The slope of P1-N1 amplitude change was significantly greater in somatization disorder patients compared to controls.
- This suggests an enhanced central nervous system response to auditory sensory input.
- Findings align with previous evidence of impaired habituation and attentional disturbances.
Conclusions:
- Somatization disorder is associated with disturbances in attention and afferent sensory regulation.
- Enhanced central nervous system response to sensory input may contribute to the disorder's symptoms.
- These findings offer insights into the pathophysiology and chronic nature of somatization disorder.