Variation of Biological Impedance during Activation of Hazard Avoidance Reaction by Electric Signal of Interpersonal Proximity Information in Blind Persons

Abstract

To clarify the mechanism of the drive phenomenon in blind people, in which short, discontinuous strikes are connected and become illegible, by quantifying the amount of psychogenic sweating during electric current application to signal interpersonal proximity information to the blind person by quantifying the bioimpedance. Participants were blind people from the Association of the Physically Handicapped and the Blind in Kusatsu Town, Japan. The participants were used by the low-frequency electric current interpersonal distance recognition system, and were considered to have successfully avoided danger (success) if they were able to recognize a human body within 5 seconds of its appearance at a distance of 2 m or 1 m, or if they were able to recognize the absence of a person within 5 seconds. elapsed before the person reacted, it was considered a hazard avoidance failure (hereafter referred to as failure). Outcome: The bio-impedance was measured before and after the experiment together with the success rate. The experiment was conducted in a random order according to experimental design. The results showed that the so-called drive phenomenon occurs when electrodes without hygroscopic material are used and instructions are added to quickly determine interpersonal distance, the only bioimpedance that showed a 250 For the KHz input, there was a significant difference in median variability between risk avoidance success and failure. The mean value was -2.4 Ω for success and -0.4 Ω for failure. Conclusion, the variation in bioimpedance, which indicates the amount of psychogenic sweating during energization in the signalization of interpersonal approach information to a blind person, tended to be larger when the signal resolution was higher.