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Event-related potential correlates of functional hearing loss: Reduced P3 amplitude with preserved Nl and N2 components in a unilateral case |
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| Authors: | MASATO FUKUDA MD AKINOBU HATA MD SHIN-ICHI NIWA MD KEN-ICHI HIRAMATSU MD MASAFUMI YOKOKOJI MD SEIKI HAYASHIDA AM KENJI ITOH DENG KAZUYUKI NAKAGOME MD AKIRA IWANAMI MD |
| Affiliation: | Department of Neuropsychiatry, Faculty of Medicine, University of Tokyo, Tokyo;Department of Neuropsychiatry, Fukushima Medical College, Fukushima;Department ofOtorhinolaryngology, Faculty of Medicine, University of Tokyo;Department of Neuropsychiatry, Mizonokuchi Hospital, Teikyo University School of Medicine;Research Institute ofLogopedics and Phoniatrics, Faculty of Medicine, University of Tokyo;Department of Psychiatry, Showa University School of Medicine, Tokyo, Japan |
| Abstract: | Abstract A female patient exhibiting functional hearing loss in her left ear demonstrated reduced amplitude of P3 component in event-related potentials (ERP) to left monaural stimulation, with preserved N1 and N2 components to stimulation of either ear. This result suggested that stimuli in the affected ear were conducted successfully up to the auditory cortex but that further processing in higher brain regions was 'repressed'. Event-related potential examination for such hysterical disorders could be useful in clarifying their brain mechanism and offer a useful diagnostic clue to its nature. |
| Keywords: | brain mechanism event-related potentials hearing loss hysteria repression |