Abnormal somatosensory evoked potentials in two patients with conversion disorder.
On clinical grounds, somatosensory evoked potentials (SEP) and motor evoked potentials (MEP) are currently used to discriminate between hysterical and neurological conditions. The present paper reports on two patients with severe gait disturbance who had the near-total absence of SEP responses on the scalp during the symptomatic period, which normalized after recovery. These findings, along with others, may shed light on the brain correlates of conversion phenomena.
Department of Psychiatry, Hacettepe University, Faculty of Medicine, Ankara, Turkey. kyazici@hacettepe.edu.tr
Kazim M
KM
Yazici
Mehmet
M
Demirci
Basaran
B
Demir
Aygun
A
Ertugrul
D000328:Adult; D001931:Brain Mapping; D002540:Cerebral Cortex / Q000503:physiopathology; D003131:Combined Modality Therapy; D003291:Conversion Disorder / Q000175:diagnosis / Q000503:physiopathology* / Q000523:psychology / Q000628:therapy; D004292:Dominance, Cerebral / Q000502:physiology; D004569:Electroencephalography; D005073:Evoked Potentials, Somatosensory / Q000502:physiology*; D005260:Female; D020234:Gait Ataxia / Q000175:diagnosis / Q000503:physiopathology* / Q000523:psychology; D006801:Humans; D008016:Life Change Events; D008297:Male; D008875:Middle Aged; D011930:Reaction Time / Q000502:physiology; D012016:Reference Values; D013064:Speech Disorders / Q000175:diagnosis / Q000503:physiopathology* / Q000523:psychology; D013575:Syncope / Q000175:diagnosis / Q000503:physiopathology* / Q000523:psychology; D016896:Treatment Outcome