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( Kensuke Takenkaka ),( Akihito Jinnai ),( Kentaro Kotani ),( Satoshi Suzuki ),( Takafumi Asao ),( Asuka Otsuka ),( Seiji Nakagawa ) 한국감성과학회 2014 춘계학술대회 Vol.2014 No.-
The objective of this study was to evaluate the influence of the intensity of perceived tactile stimuli on the difference of the spatial location on the palm. Air-puff stimuli were presented on 16 different locations on the palm as well as the tip of the index finger. Participants performed magnitude estimation protocol, where each tactile stimulus was evaluated in terms of the stimulus intensity. The results revealed that the relationship of perceived tactile intensity between distal and proximal sides showed no significant difference, whereas the relationship between medial and lateral sides showed significant differences in perceived stimulus. Difference of perceived intensity between medial and lateral sides implied that hardness of the skin surface may affect the perceived intensity rather than the distribution of mechanoreceptors on the palm. Overall, current results obtained in this study would contribute to the optimum design specifications for tactile interface devices.
Kensuke Yoshino,Seiji Ohtori,Miyako Suzuki,Yuya Kawarai,Yoshihiro Sakuma,Gen Inoue,Sumihisa Orita,Kazuyo Yamauchi,Yasuchika Aoki,Tetsuhiro Ishikawa,Masayuki Miyagi,Hiroto Kamoda,Gou Kubota,Yasuhiro Oi 연세대학교의과대학 2014 Yonsei medical journal Vol.55 No.6
Purpose: Transient receptor potential vanilloid 1 (TRPV1) is a ligand-gated nonselectivecation channel, which can be activated by capsaicin and other noxious stimuli. Recently, an association between bone pain and TRPV1 has been reported. However, the influence of osteoporosis on TRPV1 in the sensory system innervatingthe femur has not been reported. Materials and Methods: TRPV1-immunoreactive(ir) in dorsal root ganglia (DRG) neurons labeled with neurotracer [Fluoro-Gold (FG)] innervating the femurs of Sprague Dawley rats were examined in control, sham, and ovariectomized (OVX) rats. We evaluated osteoporosis in the femursand compared the proportion of TRPV1-ir DRG neurons innervating femur between the 3 groups of rats. Results: OVX rats showed osteoporotic cancellous bone in the femur. FG labeled neurons were distributed from L1 to L6 DRG, but there was no significant difference in the proportion of labeled neurons between the 3 groups (p>0.05). The proportions of FG labeled TRPV1-ir DRG neurons were 1.7%, 1.7%, and 2.8% of DRG neurons innervating the femur, in control, sham-operated,and OVX rats, respectively. The proportion of TRPV1-ir neurons in DRG innervating the femur in OVX rats was significantly higher than that in control and sham-operated rats (p<0.05). Conclusion: Under physiological conditions, DRG neurons innervating femurs in rats contain TRPV1. Osteoporosis increases the numbers of TRPV1-ir neurons in DRG innervating osteoporotic femurs in rats. These findings suggest that TRPV1 may have a role in sensory perception of osteoporoticfemurs.
Kensuke Takenkaka,Akihito Jinnai,Kentaro Kotani,Satoshi Suzuki,Takafumi Asao,Asuka Otsuka,Seiji Nakagawa 대한인간공학회 2014 대한인간공학회 학술대회논문집 Vol.2014 No.5
The objective of this study was to evaluate the influence of the intensity of perceived tactile stimuli on the difference of the spatial location on the palm. Air-puff stimuli were presented on 16 different locations on the palm as well as the tip of the index finger. Participants performed magnitude estimation protocol, where each tactile stimulus was evaluated in terms of the stimulus intensity. The results revealed that the relationship of perceived tactile intensity between distal and proximal sides showed no significant difference, whereas the relationship between medial and lateral sides showed significant differences in perceived stimulus. Difference of perceived intensity between medial and lateral sides implied that hardness of the skin surface may affect the perceived intensity rather than the distribution of mechanoreceptors on the palm. Overall, current results obtained in this study would contribute to the optimum design specifications for tactile interface devices.
Hisao Suzuki,Kensuke Kuroda,Masazumi Okido,Ryoichi Ichino 한국표면공학회 2010 한국표면공학회 학술발표회 초록집 Vol.2010 No.11
To improve the anti-corrosion property of AZ31 Mg alloy, in the present study we tried to form thin films using electrodeposition, anodizing and thermal oxidation. The flake-like hydroxyapatite (HAp) film was formed by electrodeposition in a solution containing Ca and P ions, the MgO film indicating a white color by anodizing in a solution of NaOH, and the MgO film indicating a interference color by thermal oxidation in air, respectively. From the results of anti-corrosion measurements, we found that these films had the anti-corrosion property in simulated body fluid (SBF).
Factor Structure of the Targeted Inventory on Problems in Schizophrenia
Shoji Tanaka,Takanori Nagase,Takefumi Suzuki,Kensuke Nomura,Hiroyoshi Takeuchi,Shinichiro Nakajima,Hiroyuki Uchida,Gohei Yagi,Koichiro Watanabe,Masaru Mimura 대한정신약물학회 2013 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.11 No.1
Objective: The aim of this study was to explore the factor structure of a novel, 10-item rating scale, the Targeted Inventory on Problems in Schizophrenia (TIP-Sz). Determining the factor structure will be useful in the brief evaluation of medication and non-medication treatment of the disease. Methods: An exploratory factor analysis was performed on TIP-Sz scores obtained from 100 patients who met the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) criteria for schizophrenia. Results: The factor analysis extracted four factors that were deemed clinically pertinent, which we labeled: disorganization, social cooperativeness, functional capacity, and emotional state. The items exhibited cross-loadings on the first three factors (i.e.,some items loaded on more than one factor). In particular, the ‘behavioral dyscontrol and disorganization,’ ‘insight and reality testing,’ and ‘overall prognostic impression’ items had comparable cross-loadings on all of the first three factors. The emotional state factor was distinct from the other factors in that the items loading on it did not cross-load on other factors. Conclusion: The TIP-Sz scale comprises factors that are associated with the psychosocial functioning and emotional state of patients, which are important outcome parameters for successful treatment of the disease.