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Transactions of Japanese Society for Medical and Biological Engineering最新文献

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Effect of neurofeedback training on event-related desynchronization strength by motor imagery 神经反馈训练对运动意象事件相关去同步强度的影响
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.565
Kenya Wada, H. Kayanuma, Miku Matsubara, Naoto Seki, Masaya Kurata, D. Takehara, Y. Ono
{"title":"Effect of neurofeedback training on event-related desynchronization strength by motor imagery","authors":"Kenya Wada, H. Kayanuma, Miku Matsubara, Naoto Seki, Masaya Kurata, D. Takehara, Y. Ono","doi":"10.11239/JSMBE.55ANNUAL.565","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.565","url":null,"abstract":"We investigated the transition of event-related desynchronization (ERD) intensity through 6 days of brain-machine interface (BMI) training using Digital Mirror Box (DMB), which is a potential rehabilitation system for stroke patients with hand paralysis. Eleven healthy participants performed motor-imagery of grasping their dominant hand under the observation of hand movement video. The overall ERD strength of all participants showed a significant increase from day 1 to day 6. When the participants were divided into high and low ERD groups by their initial ERD strength of higher or lower than 0% at the initial measurement before BMI training, respectively, participants in low ERD group showed larger training effect. These results suggest that BMI training is particularly useful for increasing the ERD strength of stroke patients who have lower ERD strength.","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74892129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of auditory impressions induced by HVAC sound using predictive model 用预测模型评价暖通空调声音诱发的听觉印象
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.522
H. Yano, T. Takiguchi, Y. Ariki, M. Kamiya, S. Nakagawa
{"title":"Evaluation of auditory impressions induced by HVAC sound using predictive model","authors":"H. Yano, T. Takiguchi, Y. Ariki, M. Kamiya, S. Nakagawa","doi":"10.11239/JSMBE.55ANNUAL.522","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.522","url":null,"abstract":"The evaluation of subjective impressions induced by environmental sounds using neurophysiological indices has been proposed in recent years. In this paper, we focus on the evaluation of HVAC (heating, ventilation and air conditioning) sounds, and models that predict subjective coolness/preference induced by time-varying HVAC sound from brain activities were constructed. First, magnetoencephalographic (MEG) measurements were carried out to measure brain activities while hearing HVAC sound with paired comparison task. Second, feature vectors representing time-frequency components of brain activities on the whole head were extracted from MEG data using the time-frequency analysis and nonnegative tensor factorization (NTF). And third, two kinds of predictive model were constructed from the brain feature vectors and comparative judgments to pairs of stimuli using a regression model or an SVM-based method. Evaluation experiments show that the SVM-based method is more effective than the regression model.","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74709471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Preliminary Study of Sleep Quality Assessment for Elderly People Based on Unobtrusive Sleep Monitoring System 基于非干扰性睡眠监测系统的老年人睡眠质量评价初探
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.309
Zunyi Tang, Linlin Jiang, L. Hu, Yuta Sato, Y. Komuro, K. Sakatani
{"title":"Preliminary Study of Sleep Quality Assessment for Elderly People Based on Unobtrusive Sleep Monitoring System","authors":"Zunyi Tang, Linlin Jiang, L. Hu, Yuta Sato, Y. Komuro, K. Sakatani","doi":"10.11239/JSMBE.55ANNUAL.309","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.309","url":null,"abstract":"","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72381723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effect of dance video game training on elderly's cognitive function 舞蹈电子游戏训练对老年人认知功能的影响
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.526
N. Azman, Kota Suzuki, Tatsuya Suzuki, Y. Ono, Yuki Edanaka, Fukuo Kunieda, Masahiro Nakata, Kazuko Watanabe
{"title":"Effect of dance video game training on elderly's cognitive function","authors":"N. Azman, Kota Suzuki, Tatsuya Suzuki, Y. Ono, Yuki Edanaka, Fukuo Kunieda, Masahiro Nakata, Kazuko Watanabe","doi":"10.11239/JSMBE.55ANNUAL.526","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.526","url":null,"abstract":": We used dance video game (DVG) training as a mean of improving elderly’s cognitive function and investigated whether the elderly with MCI could overcome the once affected cognitive function via continuous DVG training. Nine elderly participated in 6-weeks of DVG training for almost 3 months on 2015 and 2016 with 6 months break. Their cognitive ability (MoCA-J scores) and the prefrontal activity during DVG play were evaluated throughout the intervention. The cognitive ability and the performance of the DVG showed improvement especially in the elderly with MCI. The prefrontal activity showed increase through initial training of DVG and decrease at the end of the intervention, suggesting the cognitive load required for DVG play. Our results suggest that DVG is a promising intervention for elderly people with MCI to maintain their cognitive ability, and that we can utilize the prefrontal activity during DVG play to determine an appropriate difficulty of the DVG training.","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80660999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Natural frequencies of brachii muscle at various contraction levels 不同收缩水平下肱肌的自然频率
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.532
Saki Okura, T. Uchiyama
{"title":"Natural frequencies of brachii muscle at various contraction levels","authors":"Saki Okura, T. Uchiyama","doi":"10.11239/JSMBE.55ANNUAL.532","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.532","url":null,"abstract":"The natural frequencies of the longitudinal and radial directions of the biceps brachii muscle were estimated by measuring evoked torque and muscle oscillation, respectively. The purpose of this study is to reveal the relation between the natural frequencies of longitudinal and radial directions to the biceps brachii muscle. An electrically stimulated evoked torque and mechanically stimulated evoked muscle oscillation were measured with a strain gauge load cell and myotonometer, respectively. The measurement was carried out during a resting state and an isometric contraction. The systems of the evoked torque and the muscle oscillation were identified. The natural frequency of the systems was calculated from the poles of the transfer function. In conclusion, the frequency of evoked torque and muscle oscillation increased as the muscle contraction level increased. It is suggested that the natural frequency of the axial direction might be estimated from the natural frequency of the radial direction of the muscle.","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83412380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Measurement of the action potential of the nerve for the isolation of the nerve in the operative field: An experimental study in rabbit 兔术野神经分离中神经动作电位的测定
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.524
Naoto Ujiie, T. Nakano, K. Shimizu
{"title":"Measurement of the action potential of the nerve for the isolation of the nerve in the operative field: An experimental study in rabbit","authors":"Naoto Ujiie, T. Nakano, K. Shimizu","doi":"10.11239/JSMBE.55ANNUAL.524","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.524","url":null,"abstract":"Background: Intraoperative neuromonitoring has been introduced to such surgery as head and neck, however, it is insufficient to predict the nerve function. In this study, we evaluate the nerve function by measuring the action potential directory in the operation field. Methods: Sciatic nerves of the rabbits were pulse stimulated electrically. The amplitude of the action potential of the nerve was evaluated on the nerve or surrounding tissue using by a custom-designed bio-amplifier. Results: Two different waveforms of electrotonic spread and the saltatory conduction were recorded. The conduction velocity was 50 to 60 m/s. The amplitude of saltatory conduction on the nerve and surrounding tissue was measured approximately. Discussion: The saltatory conduction in the neighboring tissue was evaluated. It makes possible to detect the action potential derived from the nerve within 10 mm away from the nerve in the operative field.","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91064371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Development of a Stressor Evaluation System with Image Conversation 基于图像对话的应激源评估系统的开发
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.569
Kenta Ishizuka, Rena Furuyama, H. Miyake
{"title":"Development of a Stressor Evaluation System with Image Conversation","authors":"Kenta Ishizuka, Rena Furuyama, H. Miyake","doi":"10.11239/JSMBE.55ANNUAL.569","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.569","url":null,"abstract":"","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77387646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Medial gastrocnemius muscle stiffness dependent on gait speed 内侧腓肠肌僵硬度与步态速度的关系
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.534
Yuto Matsue, T. Uchiyama
{"title":"Medial gastrocnemius muscle stiffness dependent on gait speed","authors":"Yuto Matsue, T. Uchiyama","doi":"10.11239/JSMBE.55ANNUAL.534","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.534","url":null,"abstract":"The purpose of this study is to clarify the relationship between gastrocnemius muscle stiffness and gait speed. Eight males participated in this experiment and walked at 2, 3, 4, and 5 km/h on a treadmill. Electrical stimulation was percutaneously applied to the medial gastrocnemius muscle once every two push offs, and the mechanomyogram was measured. The evoked mechanomyogram was extracted by subtracting the walking vibration from the measured mechanomyogram. The evoked mechanomyogram system was identified using a singular value decomposition method, and the natural frequency was calculated from the transfer function. The natural frequency was used as an index of stiffness. Two natural frequencies increased as gait speed increased; however, one natural frequency did not. The increased natural frequencies might be related to the muscle contraction, and the unchanged frequency might be related to the skin and subcutaneous tissue. In conclusion, medial gastrocnemius muscle stiffness increased as gait speed increased.","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79008398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Influence of local mechanical stimulus on cardiac cell aggregate 局部机械刺激对心肌细胞聚集的影响
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.588
Shin Arai, Ayaha Tsuyuki, T. Uehara, Ketaro Ishida, T. Mitsui
{"title":"Influence of local mechanical stimulus on cardiac cell aggregate","authors":"Shin Arai, Ayaha Tsuyuki, T. Uehara, Ketaro Ishida, T. Mitsui","doi":"10.11239/JSMBE.55ANNUAL.588","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.588","url":null,"abstract":"Mechanical stimuli by a probe were applied to myocardial cell aggregates in vitro. The stimulus was given periodically and its motion was mimicking the actual contraction-relaxation motion of spontaneous beating by a cell aggregate. We investigated the effect of the external stimuli on spontaneous beating of cell aggregates in short-term at room temperature and in long-term under culture conditions. At room temperature, myocardial cell aggregates were sensitive to the stimuli and the aggregate’s spontaneous interbeat interval (IBI) dramatically changed in time. In contrast, the long-term periodic stimuli tended aggregates to synchronize their beating with the stimulus frequencies by 24h. Finally, we would discuss the biological responses under long-term mechanical stimuli in culture conditions.","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73589070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Development of an ERD measurement system using Emotiv Epoc 基于Emotiv Epoc的ERD测量系统开发
Transactions of Japanese Society for Medical and Biological Engineering Pub Date : 2017-05-03 DOI: 10.11239/JSMBE.55ANNUAL.556
D. Takehara, H. Kayanuma, Miku Matsubara, Naoto Seki, Kenya Wada, Masaya Kurata, Y. Ono
{"title":"Development of an ERD measurement system using Emotiv Epoc","authors":"D. Takehara, H. Kayanuma, Miku Matsubara, Naoto Seki, Kenya Wada, Masaya Kurata, Y. Ono","doi":"10.11239/JSMBE.55ANNUAL.556","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.556","url":null,"abstract":"We developed a low-cost, event-related desynchronization (ERD) measurement system using consumer-grade EEG system (Emotiv Epoc) for application of motor-imagery (MI) related brain machine interface (BMI). We investigated accuracy of ERD power detection of Epoc by comparing the ERD power calculated from simultaneously recorded EEG via Epoc and medical-grade EEG system (g.USBamp: g.tec medical engineering). Eleven healthy participants performed MI of holding a rolling tennis ball and opening the grasped hand under the observation of hand movement video. The mean ERD power was comparable between Epoc and g. USBamp with both hand gestures tested. ERD detection accuracy of Epoc was 70.5% of the all trials tested. Considering the price of Epoc, our results suggest that Epoc could be a good substitute for medical-grade EEG systems for the purpose of MI-based BMI. Keyword: BMI, Emotiv, event-related desynchronization","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76316756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
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