N. Yamanouchi

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PURPOSE To examine the brain damage of solvent abusers in Japan, where pure industrial toluene is frequently abused. METHODS Twenty solvent abusers 17 to 33 years of age with 7.2 +/- 4.0 years of abuse were examined with a 1.5-T MR imaging system. RESULTS White matter hyperintensities in cerebrum, brain stem, and cerebellum on T2-weighted images were(More)
To investigate the functional connection of brain areas under motor inhibition, the event-related coherence (ERCoh) of the electroencephalogram (EEG) was calculated for 10 subjects who were asked to perform a visual discrimination (GO/NO-GO) task. The subjects were instructed to push (GO) or not to push (NO-GO) a micro-switch according to different visual(More)
Recently a relationship between serotonin transporter transcriptional control region (5-HTTLPR) polymorphism and anxiety related personality traits in Caucasians was reported. We performed PCR of DNAs from the blood for determining the 5-HTTLPR genotypes of 191 Japanese subjects, which were medical staff and students, and obtained Revised NEO Personality(More)
We have reported the family line with frontotemporal dementia (FTD) in Japan. This family line has so far included four patients. Patient II-1 (man) had a 10 year history of slowly progressive personality and behavioral changes and died at the age of 56. His neuropathological examination showed severe atrophy of the bilateral frontal and temporal cortices(More)
To investigate the physiological role of visual gamma-band oscillation (GBO), we calculated the event-related dynamics of the EEG power-spectrum for paired visual stimuli (S1 and S2) with or without attention in 12 subjects. The visual stimuli elicited transient increases in the GBO power (around 40 Hz), which were maximal over the parietal area. The peak(More)
OBJECTIVE To clarify how chronic solvent abuse affects cognitive function using magnetic resonance imaging as an index of brain damage. MATERIAL AND METHODS A total of 25 chronic solvent abusers underwent magnetic resonance imaging with quantitative neurometry and Wechsler Adult Intelligence Scales revised. RESULTS The abusers with white matter change(More)
PURPOSE To study the relationship between the MR findings and the clinical features in temporal lobe epilepsy in childhood (less than 10 years of age). METHODS MR studies were performed with a 1.5-T imager on 38 temporal lobe epilepsy patients receiving drug therapy at the psychiatric department. These patients were divided into two groups according to(More)
Single photon emission computed tomography (SPECT) with n-isopropyl-p-[123I]iodoamphetamine (IMP) was performed on 20 patients with systemic lupus erythematosus (SLE). Fifteen of the patients showed areas of hypoperfusion. All nine patients who had florid psychiatric manifestations at the time the SPECT was performed had hypoperfusion areas. Four patients(More)