Tsutomu Oohashi

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Although human beings cannot perceive elastic vibrations in the frequency range above 20 kHz, nonstationary sounds containing a wealth of inaudible high-frequency components (HFC) above the human audible range activate deep-lying brain structures, including the brainstem and thalamus and evoke various physiological, psychological, and behavioral responses.(More)
OBJECTIVES To verify the utility of a portable electroencephalogram (EEG) measurement system developed for investigating spontaneous EEG from vigorously moving healthy subjects in a possession trance under a natural condition. METHODS A portable multi-channel EEG telemetry system was developed to record the EEGs of 3 healthy male Balinese while they were(More)
We have found that sounds containing high-frequency components above the human audible range (20kHz) significantly increase the regional blood flow in the deep-lying brain structure and the power of the alpha frequency range of the spontaneous electroencephalogram (EEG), and positively affect sound perception. We have termed this phenomenon the “hypersonic(More)
We evaluated the effects of the intensity of an inaudible high-frequency component (HFC) of sound on human responses by employing a multi-parametric approach consisting of behavioral measurements of the comfortable listening level (CLL), psychological measurements of the subjective impression of sounds, and physiological measurements using(More)
To examine the effect and significance of the phenomenon of death, we have developed an artificial life simulator, SIVA-III (simulator for individuals of virtual automata III), based on a “programmed self-decomposition model”. The architecture of this simulator consists of a “finite heterogeneous habitation environment” and “artificial life with programmed(More)
Under the AChem paradigm and the programmed self-decomposition (PSD) model, we propose a hierarchical model for the biomolecular covalent bond (HBCB model). This model assumes that terrestrial organisms arrange their biomolecules in a hierarchical structure according to the energy strength of their covalent bonds. It also assumes that they have(More)
As part of our research on <programmed self-decomposition>, we formed the hypothesis that originally immortal terrestrial organisms evolve into ones that are programmed for autonomous death. We then conducted simulation experiments in which we examined this hypothesis using an artificial ecosystem that we designed to refer to a terrestrial ecosystem endowed(More)
The hypersonic effect is a phenomenon in which sounds containing significant quantities of non-stationary high-frequency components (HFCs) above the human audible range (max. 20 kHz) activate the midbrain and diencephalon and evoke various physiological, psychological and behavioral responses. Yet important issues remain unverified, especially the(More)
We had proposed a biological hypothesis \programed self-decomposition (PSD) model" which assumes that a self-decomposition mechanism is programed in each cell of all creatures on the earth and contributes to the restoration of the original state of the terrestrial ecosystem[2{6]. In this article, the overview of the researches on PSD model and the newest(More)