[A simplified method for evaluation of brain function--basic and clinical study on electroencephalogram by the nasopharyngeal lead].
In making a decision for death, it is well said that brain stem electroencephalogram (EEG) could be an important index. We applied Ishida's nasopharyngeal lead to animals (canine), normal healthy men and patients with brain dysfunction. In normal healthy men, the nasopharyngeal lead revealed clear brain waves. Additionally, we tried a photic stimulation in all the models and a gradual removal of the cerebrum in canines to investigate whether interaction between Ishida's nasopharyngeal lead and the cortical electroencephalogram exists. Furthermore, whenever there was a chance, we examined instances with brain dysfunction by the method, and confirmed that brain waves obtained from Ishida's nasopharyngeal lead were derived from the skull base.
Ishida
N
N
Department of Legal Medicine, Kansai Medical University, Moriguchi, Japan.
Okii
Y
Y
Kawamoto
K
K
D000328:Adult; D000368:Aged; D000818:Animals; D001921:Brain / Q000502:physiology / Q000503:physiopathology*; D001926:Brain Death / Q000175:diagnosis; D004285:Dogs; D004566:Electrodes; D004569:Electroencephalography / Q000295:instrumentation / Q000379:methods*; D006801:Humans; D008297:Male; D009305:Nasopharynx