Changes in Electrodermal Activity Associated with Candies and Chewing Gum Chewing Satoshi Beppu, Takeshi Morita*, Susumu Igarashi **, Kanichi Seto* an

Size: px

Start display at page:

Download "Changes in Electrodermal Activity Associated with Candies and Chewing Gum Chewing Satoshi Beppu, Takeshi Morita*, Susumu Igarashi **, Kanichi Seto* an"

さみたかひ
4 years ago
Views:

1 Changes in Electrodermal Activity Associated with Candies and Chewing Gum Chewing Satoshi Beppu, Takeshi Morita*, Susumu Igarashi **, Kanichi Seto* and Yosihiro Amemiya Abstract: This study was designed to evaluate whether mental stress was decreased by candies and chewing gum chewing. The subjects consisted of 10 male students without malocclusion at Tsurumi University School of Dental Medicine. The test material were a candy called Gummi (Meiji Seika Kaisha, Ltd., Gummi Grape 100(R)) and chewing gum produced for this study. Stress was imposed by the addition test method. Electrodermal activity (EDA) was evaluated by the exosomatic method. The subjects rested for 10 min after starting the experiment. Once changes in EDA stabilized, a control recording was made. Changes in EDA were then recorded while the subjects performed a 1-minute addition test (addition test group). Then changes in EDA during a 1-minute addition test were observed while the subjects chewed Gummi (Gummi group). After resting for 10 min, they chewed chewing gum for 5 min, and the changes in EDA while chewing chewing gum were observed (chewing gum group). The values of resistance in each group were evaluated at 10 sec intervals. The EDA was evaluated as percent change, with the value at the start of the addition test taken to be 100. The statistical significance of differences in response between the groups was assessed by Student's t-test. Although there was considerable inter-subject variation in resistance, the values at the start of the addition test were }208.5kS2 (mean }SE) in the addition test group, }98.5 kƒ in the Gummi group, and }88.7kƒ in the chewing gum group. Maximal changes in these groups were observed after 10 sec and were 53.4 }3.9% (mean }SE) in the addition test group, 76.4 }4.1% in the Gummi group, and 68.8 }6.7% in the chewing gum group.the rates of change after 60 sec recovered to 59.8 }3.8% in the addition test group, 89.9 }3.3% in the Gummi group, and 83.4 }9.0% in the chewing gum group.the values in the addition test group were significantly different from those in the Gummi group and chewing gum group. The Yoshihiro Amemiya) *First Department of Oral and Maxillofacial Surgery, Tsurumi University School of Dental Medi- cine (Chief: Prof. Kanichi Seto) **Product Evaluation Department, Food Research and Development Laboratories, Meiji Seika Kaisha, Department of Dental Anesthesiology, Tsurumi Ltd. (Chief: Akinaka Habuto) University School of Dental Medicine (Chief: Prof.

2 results indicate that mental stress during light activity is decreased by Gummi and chewing gum chewing. Key words: mastication, mental stress, electrodermal activity

7 ) Ono, T., Nishino, H., Sasaki, K., Fukuda, M., Muramoto, K.: Role of the lateral hypothalamus and the amygdala in feeding behav- ior. Brain Res Bull, 5 (suppl. 1) : , 12) Dixon, R. A., Bennett, N. R., Harrison, M J., Kenyon, C., Thornton, J. A.: I. V. flunitrazepam and I. V. diazepam in conservative dentistry, a cross-over trial. Br J anaesth 52 : 517 `527, ) Khurana, R. K., Watabiki, S., Hebel, J. R., Toro, R., Nelson, E.: Cold face test in the assessment of trigeminal-brainstem-vagal function in humans. Ann Neurol 7 : ,

udc-2.dvi

udc-2.dvi 13 0.5 2 0.5 2 1 15 2001 16 2009 12 18 14 No.39, 2010 8 2009b 2009a Web Web Q&A 2006 2007a20082009 2007b200720082009 20072008 2009 2009 15 1 2 2 2.1 18 21 1 4 2 3 1(a) 1(b) 1(c) 1(d) 1) 18 16 17 21 10