최면수사의 심리 생리적 연구
Hypnositic Investigation in the Physiological Arena
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본 논문은 최면수사가 과학적인 수사기법인가를 탐색하기 위해 뇌의 신경 생리적 기제를 살폈다. EEG(Electroencephalogram), ERP(Event Related Potentials) 및 PET(Positron emission tomography) 의 최면상태의 연구결과를 살펴본 결과, 먼저 EEG 연구에서 최면상태는 40 Hz의 파가 나오며 ERP 연구에서는 최면 감수성의 반응차이를, 그리고 PET 연구는 최면상태 하에서의 뇌 활성화 영역을 밝 혔으며 두뇌 반구설에 의한 연구에서 우반구의 활동이 증가한다는 연구결과들이 나타났다. 이러한 결 과들로 인해 최면상태에서는 우반구가 활성화되어 좌반구에 비해목격한 정확한 사건들만을 기억하고, 일 어나지 않았던 사건들을 잘못 재인하는 일이 좌반구보다 작다. 이들 연구결과를 고려해 보면 최면중에 나 타난 기억은 보통 기억보다도 더 정확하다고 할 수 있으며 이를 이용한 최면수사는 앓어버린 기억을 회상 시키는데 있어서 현재 존재한 여러 과학적 기법중 제일 신빙성이 높은 과학적인 수사기법이라고 할 수 있다.
Abstract
In this article we reviewed the current research on psychophysiological states of various hypnotic states in order to determine whether the hypnotic investigation is reliable and scientifically justifiable. To study the neurophysiological mechanisms of the brain under hypnotic state, the results of EEG, ERP, PET studies during the hypnotic process were evaluated. From the EEG studies on the hypnotic state 40-Hz theta EEG activity was found to be produced. The ERP research results showed differential hypnotic susceptibility against stimuli. PET study showed differences in the brain region of activation under a state of hypnosis and increased activity in right hemisphere of the brain. Considering these results of more activation in the right hemisphere of the brain compared to the left hemisphere in the hypnotic state, it can be explained that the exact events witnessed can be remembered due to the right hemisphere activation compared to the left hemisphere which is active only to remember the incident that did not happen. The recovered memory gathered during the hypnotic precess can be more accurate than the memory recovered by normal physiological precess. As a technical tool for the recall of lost memories during the criminal investigation hypnotic investigation can be the most credible scientific investigative techniques among current various scientific techniques.
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