No abstract

In this study passenger's sensibility change was investigated by changing vehicle speed in real driving situation. In order to measure human sensibility averaged R-R interval, GSR and skin temperature, which are not much affected by noise caused while driving were used. The physiological responses were compared with subjective evaluation by self-report method. We report some of preliminary results relating to changes of autonomic responses elicited by varying a vehicle speed (0. 30.60. 90, 120 km/h) during daytime and nighttime. Healthy human subjects (n=5) were participated in the experiments. Averaged R-R interval values and skim temperature decreased as the speed increased both during daytime and nighttime. The GSR amplitude increased as the speed increased both during daytime and nighttime. All kinds of physiological signals includiig averaged R-R interval, skin temperature, and GSR, showed the result that the activity of sympathetic nervous system of the ANS increased as the vehicular speed increased.

Abstract.A measurement system was employed to detect gustatory evoked potentials from human scalp by stimulus of a taste solution with the use of a laser beam device. The evoked potentials for four taste qualities (i.e., sweet-sucrose, salty-sodium chloride, sour-tartaric acid, and bitter-quinine-HCl) were measured before and after treatment with a sweet suppressing agent (i.e., gymnema sylvestre extract) to the tongue of a human. The solution was given to the chorda tympani nerve located 20 mm from the apex of the tongue and 15 mm from the left side of the center line. The maximum potential level and its latency were evaluated. Artificial saliva was used as a control solution. The evoked potentials obtained were averaged by eight evoked potentials to detect the peak of the evoked potential more clearly. The latencies for taste stimuli were found on two kinds of peaks at approximately 50 ms and 180 ms. These peaks are P1 and P2. The purpose of this study is to investigate the influence of sweet suppressing agent on P1 and P2. The influence of the sweet suppressing agent to evoked potential by salty, sour, and bitter taste stimuli was not recognized, but the responses to sweet (sucrose) were abolished after treatment with a sweet suppressing agent. It was recognized that the peak P2 originated from the taste stimulus. The peak P1 did not suffer the influence of the sweet suppression, so it was considered that the response to P1 was due to sensations other than the gustatory response, such as somatosense.

We developed an a aratus for odorous stimuli control to record olfactory evoked otentials from human scalp. The characteristics of the apparatus were as follows. 1. P. subjects respiration mto electric SI % Trans aQn# the nals wtth a sensor at@ched to the nose. The per10 apd timmg .of odorous stitpoli could e adjusted so, that stmmlr could be synchronous .wtth respir@on. 2. The resplrattons translated mto eiectrtc st by .ustn an auto gam control circuit. 3.. The B nals were made constant m amphtude arbltrarrfy selected once every I tp 9 res inters lmulus m&rval of odorous could he obtained olfactory -evpked potent& (Q !i lrattons so that &p@ttqn cou!d be prevented. We site of Cz, whose Ps) to odorous &mull usmg this apparatus from the f osttwe peak l&enctes were approxpnatel were not recorded I, oxygen stmmh(Contyol) were used d 180 f 23111s. Such response mstea of odorous or with click sounds produced by the swttchmg electromagnetic valve.

Burden of dementia patients supportersThe number of dotards over 65 years old based on 2014 in Korea was 610,000 persons, that is, 1 person out of 10 persons. The problem is the family who looks after dementia patients. According to the statistics of health insurance medical expenses in 2013 of Health Insurance Review & Assessment Service, the medical expenses of dementia patients were 646,200,000,000 won, which was highest. The National Medical Dementia Center of Korea figures out those medical expenses born by family per 1 dementia patient are 18,920,000 won. The 62% of dementia patient's supporters have a mild depressive disorder, and 20% are receiving psychotherapy. The trouble of the family where a dementia patient exists often leads to a tragedy. As an example, in Dec, 2012, the incident that the grandmother in her seventies attempted to kill her husband who was sleeping at the room by hammering his head several times happened [1]. The grandmother who devotedly had cared for her husband for 5 years confessed, "It was too difficult to live with her dementia husband.