Pub Date : 2017-05-03DOI: 10.11239/JSMBE.55ANNUAL.562
Masaya Kurata, H. Kayanuma, Miku Matsubara, Naoto Seki, Kenya Wada, D. Takehara, Y. Ono
We are developing Digital Mirror Box (DMB), a brain machine interface (BMI)based rehabilitation system for stroke patients with hand paralysis. Aiming to train the motor-command generation from the affected hemisphere, DMB uses an event related desynchronization (ERD) derived from motor imagery as an operating signal of the BMI feedback. In order to assist the patients to perform motor imagery, the current DMB system presents a movie of hand motion, in which a hand-grasping motion picture is presented immediately after a still image of the fixation point. However, there remains a possibility that the detected ERD is influenced by an attentional switching from still to motion picture, not by action observation or motor imagery per se. We therefore modified the movie to contain a still image of a resting hand between fixation cue and hand motion picture. We could successfully differentiate the μ band suppression of the attentional switching from those derived from motor imagery.
{"title":"Investigation of optimal visual cue for training of motor-imagery response","authors":"Masaya Kurata, H. Kayanuma, Miku Matsubara, Naoto Seki, Kenya Wada, D. Takehara, Y. Ono","doi":"10.11239/JSMBE.55ANNUAL.562","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.562","url":null,"abstract":"We are developing Digital Mirror Box (DMB), a brain machine interface (BMI)based rehabilitation system for stroke patients with hand paralysis. Aiming to train the motor-command generation from the affected hemisphere, DMB uses an event related desynchronization (ERD) derived from motor imagery as an operating signal of the BMI feedback. In order to assist the patients to perform motor imagery, the current DMB system presents a movie of hand motion, in which a hand-grasping motion picture is presented immediately after a still image of the fixation point. However, there remains a possibility that the detected ERD is influenced by an attentional switching from still to motion picture, not by action observation or motor imagery per se. We therefore modified the movie to contain a still image of a resting hand between fixation cue and hand motion picture. We could successfully differentiate the μ band suppression of the attentional switching from those derived from motor imagery.","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":"85796529","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}
Pub Date : 2017-05-03DOI: 10.11239/JSMBE.55ANNUAL.597
Haruna Nakazawa, Marika Doi, E. Ogawa, T. Arai
(one line blank) Abstract: Slicing sample preparation in tissue optical characteristic measurement may makes huge error over individual optical differences. We proposed the combination of light intensity measurement through an optical fiber puncturing into a bulk tissue varying detection numerical aperture and ray tracing calculation to avoid slicing degradation of living tissue. To reveal the characteristics of this measurement, optical coefficients of pig myocardium obtained by the IAD method with slicing living tissue sample preparation and proposed measurement method were compared. In the proposed method, a silica fiber installed in an18G needle was punctured up to the bottom of the myocardial bulk tissue to measure light intensity in the bulk tissue changing depth and numerical aperture. The author found that measured apparent attenuation coefficients tended to strongly depend on numerical aperture. The ray trace calculation explained the same numerical aperture tendency in above mentioned experimental result. Optical characteristics of sliced myocardial samples revealed temporal change due to dehydration.
{"title":"Optical coefficient measurements using bulk living tissue with optical fiber puncture","authors":"Haruna Nakazawa, Marika Doi, E. Ogawa, T. Arai","doi":"10.11239/JSMBE.55ANNUAL.597","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.597","url":null,"abstract":"(one line blank) Abstract: Slicing sample preparation in tissue optical characteristic measurement may makes huge error over individual optical differences. We proposed the combination of light intensity measurement through an optical fiber puncturing into a bulk tissue varying detection numerical aperture and ray tracing calculation to avoid slicing degradation of living tissue. To reveal the characteristics of this measurement, optical coefficients of pig myocardium obtained by the IAD method with slicing living tissue sample preparation and proposed measurement method were compared. In the proposed method, a silica fiber installed in an18G needle was punctured up to the bottom of the myocardial bulk tissue to measure light intensity in the bulk tissue changing depth and numerical aperture. The author found that measured apparent attenuation coefficients tended to strongly depend on numerical aperture. The ray trace calculation explained the same numerical aperture tendency in above mentioned experimental result. Optical characteristics of sliced myocardial samples revealed temporal change due to dehydration.","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":"76945439","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}
Pub Date : 2017-05-03DOI: 10.11239/JSMBE.55ANNUAL.503
Kota Suzuki, Tatsuya Suzuki, Y. Ono
{"title":"Effect of middle-temporal tDCS stimulation on dance-game exercise performance","authors":"Kota Suzuki, Tatsuya Suzuki, Y. Ono","doi":"10.11239/JSMBE.55ANNUAL.503","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.503","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":"85484498","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}
Pub Date : 2017-05-03DOI: 10.11239/JSMBE.55ANNUAL.544
H. Yoshida, Yasutomo Shimizu, M. Shojima, M. Ohta, T. Matsunaga, Noriko Tsuruoka, Y. Haga
Intravascular surgery, such as coil embolization and stent placement, has been widely performed for treatment of cerebral aneurysms. Doctors must be skillful and sufficiently experienced to successfully manipulate and insert a guidewire and a catheter into the aneurysm via carotid and cerebral artery. Though blood vessel model is useful for training of the doctors in the field of the intravascular surgery, evaluation of doctor’s skill and efficacy of training is insufficient. In this study, an ultrasound sensor was fabricated and equipped in the cerebral blood vessel model to measure the displacement of the vessel wall that is contacted and pushed by a guidewire or a catheter. It is confirmed that the fabricated ultrasound sensor could measure the displacement of blood vessel wall by the inserted catheter.
{"title":"Blood vessel model equipped with ultrasound sensors for evaluation of intravascular treatment","authors":"H. Yoshida, Yasutomo Shimizu, M. Shojima, M. Ohta, T. Matsunaga, Noriko Tsuruoka, Y. Haga","doi":"10.11239/JSMBE.55ANNUAL.544","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.544","url":null,"abstract":"Intravascular surgery, such as coil embolization and stent placement, has been widely performed for treatment of cerebral aneurysms. Doctors must be skillful and sufficiently experienced to successfully manipulate and insert a guidewire and a catheter into the aneurysm via carotid and cerebral artery. Though blood vessel model is useful for training of the doctors in the field of the intravascular surgery, evaluation of doctor’s skill and efficacy of training is insufficient. In this study, an ultrasound sensor was fabricated and equipped in the cerebral blood vessel model to measure the displacement of the vessel wall that is contacted and pushed by a guidewire or a catheter. It is confirmed that the fabricated ultrasound sensor could measure the displacement of blood vessel wall by the inserted catheter.","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":"76245526","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}
Pub Date : 2017-05-03DOI: 10.11239/JSMBE.55ANNUAL.605
M. Todoh
Bone is often regarded as a composite material consisting of mineral particles and organic matrix (mostly Type I collagen) on a microscopic scale. The mechanical properties of bone tissues at a macroscopic scale depend on the structural organization and properties of constituents in the microscopic scale. It is the interaction between the mineral and organic material that determines the mechanical properties. However, both mechanical behaviors of mineral and collagen phases are not clear yet. In this study, to clear both mechanical behaviors of collagen matrix and apatite crystals in bone, the cortical bone samples were collect from bovine femoral diaphysis. The microscopic mechanical behaviors of both mineral particles of apatite and collagen matrix in bone tissues were observed by wide angle X-ray diffraction (WAXD) and small angle X-ray scattering (SAXS), respectively. In combination with micro-tensile device, both strains of mineral and collagen phases were measured.
{"title":"Mechanical Analysis of Collagen/Mineral Nano-Composite of Bone Tissue by X-ray Diffraction","authors":"M. Todoh","doi":"10.11239/JSMBE.55ANNUAL.605","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.605","url":null,"abstract":"Bone is often regarded as a composite material consisting of mineral particles and organic matrix (mostly Type I collagen) on a microscopic scale. The mechanical properties of bone tissues at a macroscopic scale depend on the structural organization and properties of constituents in the microscopic scale. It is the interaction between the mineral and organic material that determines the mechanical properties. However, both mechanical behaviors of mineral and collagen phases are not clear yet. In this study, to clear both mechanical behaviors of collagen matrix and apatite crystals in bone, the cortical bone samples were collect from bovine femoral diaphysis. The microscopic mechanical behaviors of both mineral particles of apatite and collagen matrix in bone tissues were observed by wide angle X-ray diffraction (WAXD) and small angle X-ray scattering (SAXS), respectively. In combination with micro-tensile device, both strains of mineral and collagen phases were measured.","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":"73157532","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}
Pub Date : 2017-05-03DOI: 10.11239/JSMBE.55ANNUAL.518
T. Yano, E. Okamoto, Y. Mitamura
In recent years, computational fluid dynamics (CFD) has been used for designing rotary blood pumps. The secondary flow in the pump, especially between the blades, can be simulated by CFD and more precise prediction of pump performance at design and offdesign points can be made. The US Food and Drug Administration (FDA) is engaged in establishing guidelines for the usage of CFD in the research and development phase of medical devices in order to help speed up the FDA approval process. The utilization of CFD is expected to increase further. In this study, we designed an axial flow blood pump and the flow field within the pump was calculated by CFD analysis. It was confirmed that the pump performance was suitable for right heart assistance.
{"title":"Computational fluid dynamics based design of artificial heart - An axial flow pump as a right ventricular assist device -","authors":"T. Yano, E. Okamoto, Y. Mitamura","doi":"10.11239/JSMBE.55ANNUAL.518","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.518","url":null,"abstract":"In recent years, computational fluid dynamics (CFD) has been used for designing rotary blood pumps. The secondary flow in the pump, especially between the blades, can be simulated by CFD and more precise prediction of pump performance at design and offdesign points can be made. The US Food and Drug Administration (FDA) is engaged in establishing guidelines for the usage of CFD in the research and development phase of medical devices in order to help speed up the FDA approval process. The utilization of CFD is expected to increase further. In this study, we designed an axial flow blood pump and the flow field within the pump was calculated by CFD analysis. It was confirmed that the pump performance was suitable for right heart assistance.","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":"80544076","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}
Pub Date : 2017-05-03DOI: 10.11239/JSMBE.55ANNUAL.586
S. Ueno
Possible contributions of biomagnetics and bioimaging to child rearing are discussed. Scientific approaches to child rearing are important to keep and improve a high quality and affectionate rearing of children in house and in society. Philosophy and essences of way of thinking of great person are referred, and potential bridges are tried to construct between child rearing and engineering mainly based on magnetic brain stimulation and imaging. The essences for child rearing and education are referred to Emile by Jean-Jacques Rousseau, education of Helen Keller by Anne Sullivan, and quotes by Mother Teresa. In biomagnetics, magnetic brain stimulation or transcranial magnetic stimulation (TMS), magnetoencephalography (MEG), magnetic resonance imaging (MRI), functional MRI, magnetic control of cell growth, and other potential therapeutic applications of magnetic techniques are introduced. Recent neurosciences such as reward circuit and default mode network are briefly discussed for potential bridges between child rearing and brain research.
{"title":"Biomagnetics and Bioimaging for Child Rearing","authors":"S. Ueno","doi":"10.11239/JSMBE.55ANNUAL.586","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.586","url":null,"abstract":"Possible contributions of biomagnetics and bioimaging to child rearing are discussed. Scientific approaches to child rearing are important to keep and improve a high quality and affectionate rearing of children in house and in society. Philosophy and essences of way of thinking of great person are referred, and potential bridges are tried to construct between child rearing and engineering mainly based on magnetic brain stimulation and imaging. The essences for child rearing and education are referred to Emile by Jean-Jacques Rousseau, education of Helen Keller by Anne Sullivan, and quotes by Mother Teresa. In biomagnetics, magnetic brain stimulation or transcranial magnetic stimulation (TMS), magnetoencephalography (MEG), magnetic resonance imaging (MRI), functional MRI, magnetic control of cell growth, and other potential therapeutic applications of magnetic techniques are introduced. Recent neurosciences such as reward circuit and default mode network are briefly discussed for potential bridges between child rearing and brain research.","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":"88758482","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}
Pub Date : 2017-01-01DOI: 10.11239/JSMBE.55ANNUAL.209
J. Hori, S. Otsuka
{"title":"Study on Stimulus Frequency in SSVEP-Based Brain-Computer Interface Considering User's Gaze","authors":"J. Hori, S. Otsuka","doi":"10.11239/JSMBE.55ANNUAL.209","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.209","url":null,"abstract":"","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86443701","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}
Pub Date : 2017-01-01DOI: 10.11239/JSMBE.55ANNUAL.415
Narendra Kurnia Putra, P. S. Palar, H. Anzai, K. Shimoyama, M. Ohta
{"title":"Response Surface based Analysis to Improve the Intravascular Stent Design Performance on Optimizing Wall Shear Stress Conditions","authors":"Narendra Kurnia Putra, P. S. Palar, H. Anzai, K. Shimoyama, M. Ohta","doi":"10.11239/JSMBE.55ANNUAL.415","DOIUrl":"https://doi.org/10.11239/JSMBE.55ANNUAL.415","url":null,"abstract":"","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81970962","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}
S. Izawa, Kenta Tachikawa, Y. Ono, Hiroshi Kobayashi, S. Kuriki, A. Ishiyama
{"title":"Extracting the values of resting-state functional connectivity that correlate with a tendency of internet addiction","authors":"S. Izawa, Kenta Tachikawa, Y. Ono, Hiroshi Kobayashi, S. Kuriki, A. Ishiyama","doi":"10.11239/JSMBE.55.39","DOIUrl":"https://doi.org/10.11239/JSMBE.55.39","url":null,"abstract":"","PeriodicalId":39233,"journal":{"name":"Transactions of Japanese Society for Medical and Biological Engineering","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89737304","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}
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