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Developing evaluation method for peripheral sensitization in cultured sensory neurons 培养的感觉神经元外周致敏评价方法的建立
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-25 DOI: 10.1002/ecj.12419
Yuki Miyahara, Kenta Shimba, Kiyoshi Kotani, Yasuhiko Jimbo
{"title":"Developing evaluation method for peripheral sensitization in cultured sensory neurons","authors":"Yuki Miyahara,&nbsp;Kenta Shimba,&nbsp;Kiyoshi Kotani,&nbsp;Yasuhiko Jimbo","doi":"10.1002/ecj.12419","DOIUrl":"https://doi.org/10.1002/ecj.12419","url":null,"abstract":"<p>Peripheral sensitization, decrease in pain threshold in sensory neurons, can cause chronic pain. Little is known about how peripheral sensitization led to chronic pain. Here, we aimed to develop a method for evaluating peripheral sensitization in cultured sensory neurons with electrical recording. Sensory neurons from rat dorsal root ganglion were cultured on high-density microelectrode arrays (HD-MEA), and their activity was evoked by capsaicin stimulation with or without substance P. Fluorescent imaging-based electrode selection effectively selected five times as many capsaicin-sensitive sensory neurons as the existing method. Peripheral sensitization by substance P was detected from 31.9% of selected sensory neurons, and majority of these neurons co-expressed capsaicin and substance P receptors. These results indicate that our method is suitable for evaluating peripheral sensitization by substance P in cultured sensory neurons.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50154142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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 frequency measurement circuit for soil moisture content and electric conductivity measurement system with detection of soil transient response characteristics for on-site measurement 土壤含水量频率测量电路的开发及现场测量用土壤瞬态响应特性检测电导率测量系统
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-24 DOI: 10.1002/ecj.12415
Sohei Takimoto, Ryuki Shigemasu, Motoki Fujisono, Satoshi Ota, Masato Futagawa
{"title":"Development of frequency measurement circuit for soil moisture content and electric conductivity measurement system with detection of soil transient response characteristics for on-site measurement","authors":"Sohei Takimoto,&nbsp;Ryuki Shigemasu,&nbsp;Motoki Fujisono,&nbsp;Satoshi Ota,&nbsp;Masato Futagawa","doi":"10.1002/ecj.12415","DOIUrl":"https://doi.org/10.1002/ecj.12415","url":null,"abstract":"<p>In agricultural field, compact sensors that can measure both water content and electric conductivity are needed. Focusing on the fact that water content and conductivity depend on soil impedance, our group has been developing a new compact and noise-resistant driving circuit that measured soil impedance by detecting transient characteristics of the voltage obtained by injecting current through the soil and converting it to frequency information. In order to realize agricultural field measurements with sensors using this new driving circuit, it had been necessary to miniaturize the part that detected the output from the driving circuit, but it hadn't been achieved in our previous work. In this research, a microcomputer-based frequency counter was developed to downsize the system for on-site measurement. In general, there are two methods of frequency measurement: direct counting and reciprocal. The direct-counting method is suited for high-frequency measurements, while the reciprocal method is suited for low-frequency measurements. The developed frequency counter could measure with an error of 0.005% over the assumed frequency range by switching between those two measurement methods according to the measured frequency. Using this driving circuit and frequency counter, we measured the model soil and succeeded in capturing changes in water content as changes in impedance.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50142713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Object judgment with an event-driven MEMS-LSI integrated tactile sensor array system 基于事件驱动的MEMS-LSI集成触觉传感器阵列系统的物体判断
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-24 DOI: 10.1002/ecj.12421
Masanori Muroyama, Shuji Tanaka
{"title":"Object judgment with an event-driven MEMS-LSI integrated tactile sensor array system","authors":"Masanori Muroyama,&nbsp;Shuji Tanaka","doi":"10.1002/ecj.12421","DOIUrl":"https://doi.org/10.1002/ecj.12421","url":null,"abstract":"<p>We have developed tactile sensor systems for next-generation robots. To install a large number of tactile sensors, we have proposed micro electro mechanical systems-large-scale integration (MEMS-LSI) integrated tactile sensors. The integrated device has the following features: capacitive type three-axis force sensing, embedded diode-based temperature sensing, signal processing for sensing data digitalization, and event-driven response for efficient serial bus communication. This paper demonstrates a sensor array system as up-to 40 integrated tactile sensors which are connected on one bus line. After acquiring the sensing data from the sensor array system, we applied a machine learning technique for target object judgment. The objective of the judgment is to classify the targets into normal object and abnormal object. With the sensor array system, data preprocessing and tuned Recurrent Neural network (RNN)/Long Short-Term Memory (LSTM) neural network models, we achieved high-accuracy, high-precision, and high-recall scores for the experiment of the judgment.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50142715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Needle-type pressure sensor with silicone oil and parylene membrane inside for minimally invasive measurement 针式压力传感器，内置硅油和聚对二甲苯膜，用于微创测量
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-24 DOI: 10.1002/ecj.12420
Takuto Kishimoto, Masakazu Agetsuma, Ayuko Hoshino, Hidetoshi Takahashi
{"title":"Needle-type pressure sensor with silicone oil and parylene membrane inside for minimally invasive measurement","authors":"Takuto Kishimoto,&nbsp;Masakazu Agetsuma,&nbsp;Ayuko Hoshino,&nbsp;Hidetoshi Takahashi","doi":"10.1002/ecj.12420","DOIUrl":"https://doi.org/10.1002/ecj.12420","url":null,"abstract":"<p>This paper addresses a pressure sensor for body pressure measurement. Many pressure sensors have been developed for disease treatment in the medical field. However, these sensors require inserting electronic components and other sensor elements via surgical operations, so the measurement physically burdens patients. Hence, we proposed a needle-type pressure sensor using MEMS (Micro Electro Mechanical Systems) cantilever. The sensor has a needle part with a thin membrane on the tip and is filled with incompressible fluid inside. The fractional resistance of the built-in piezoresistive cantilever varies according to the pressure change applied to the needle tip. We can measure body fluid pressure with minimal surgery by inserting a simple needle into the target organ. Because the fabricated sensor responded to pseudo-body pressure changes, it was suggested that the fabricated needle-type pressure sensor could detect pressure inside the body.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50142714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Capacitor-voltage-balancing control for isolated medium-voltage AC-DC modular matrix converter 隔离式中压AC-DC模块化矩阵变换器的电容器电压平衡控制
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-23 DOI: 10.1002/ecj.12417
Kohei Budo, Takaharu Takeshita
{"title":"Capacitor-voltage-balancing control for isolated medium-voltage AC-DC modular matrix converter","authors":"Kohei Budo,&nbsp;Takaharu Takeshita","doi":"10.1002/ecj.12417","DOIUrl":"https://doi.org/10.1002/ecj.12417","url":null,"abstract":"<p>This paper presents a capacitor-voltage-balancing control scheme for an isolated medium-voltage AC-DC converter using level-shifted pulse width modulation (PWM) control of a modular matrix converter (MMxC). The proposed isolated AC-DC converter is composed of the primary MMxC with level-shifted PWMcontrol, high-frequency transformer, and secondary H-bridge circuits. The high-frequency transformer of the proposed circuit can be downsized because the level-shifted PWM control scheme makes the rated frequency of the high-frequency transformer equal to the switching-frequency. The proposed capacitor-voltage-balancing control can compensate for the capacitor voltage imbalance of the MMxC using the positive-sequence and negative-sequence circulating-currents with a power supply frequency and high-frequency voltage. In the proposed control system, the three feedback control systems with DC control variables can be developed to compensate for the capacitor voltage imbalance. The effectiveness of the proposed capacitor-voltage-balancing control scheme and the control systems is verified by experiments using a 200 V, 5-kW laboratory prototype.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50153517","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Data-driven control by using data-driven prediction and LASSO for FIR typed inverse controller FIR型逆控制器的数据驱动预测和LASSO控制
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-23 DOI: 10.1002/ecj.12405
Motoya Suzuki, Osamu Kaneko
{"title":"Data-driven control by using data-driven prediction and LASSO for FIR typed inverse controller","authors":"Motoya Suzuki,&nbsp;Osamu Kaneko","doi":"10.1002/ecj.12405","DOIUrl":"https://doi.org/10.1002/ecj.12405","url":null,"abstract":"<p>In this paper, we propose data-driven control for the case of that the structure of the ideal controller is unknown. In this case, it is natural to implement FIR typed controller. Here, we utilize FRIT for the case of FIR typed inverse controller. In general, FIR might have unnecessarily large number of its taps. To prevent it, we also utilize LASSO regression so as to realize FIR typed inverse controller in as less numbers of the tap as possible. Moreover, we also utilize data-driven prediction to determine hyper parameters required in LASSO regression. The validity of our proposed method is verified by using experiments.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50153520","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
VIMT of non-minimum phase system by using initial control signal 利用初始控制信号实现非最小相位系统的VIMT
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-21 DOI: 10.1002/ecj.12416
Motoya Suzuki
{"title":"VIMT of non-minimum phase system by using initial control signal","authors":"Motoya Suzuki","doi":"10.1002/ecj.12416","DOIUrl":"https://doi.org/10.1002/ecj.12416","url":null,"abstract":"<p>In this paper, input-oriented virtual internal model tuning (VIMT) is expanded to non-minimum phase systems. Proposed method can tune the feedback controller and the desired transfer function. Compared to Fictitious Reference Iterative Tuning (FRIT), the proposed method can realize good controllers even when the time constant of the desired transfer function is small. The validity of the proposed method is verified via numerical simulation.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50139494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fabrication and characteristics of electret ultrasonic-sensor using laser patterning 激光图案化驻极体超声传感器的制备及其特性
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-21 DOI: 10.1002/ecj.12418
Kakeru Kobayashi, Yoshiaki Kawada, Kensuke Kageyama
{"title":"Fabrication and characteristics of electret ultrasonic-sensor using laser patterning","authors":"Kakeru Kobayashi,&nbsp;Yoshiaki Kawada,&nbsp;Kensuke Kageyama","doi":"10.1002/ecj.12418","DOIUrl":"https://doi.org/10.1002/ecj.12418","url":null,"abstract":"<p>In this study, in an electret capacitor sensor (ECS), which is an electromechanical exchange device consisting of an electret sandwiched between two electrodes, ridges as spacers and grooves as gaps were formed in the PTFE (polytetrafluoroethylene) layer of the insulating electrode by laser ablation. The ECSs were then fabricated using PTFE electrets, and the charge retention and airborne ultrasonic wave transmitting and receiving characteristics were investigated. The charge retention characteristics of the ECS with laser-patterned insulating electrodes were slightly lower than those of the silica-aggregate electret. As the thickness of the insulating layer increased or the groove width decreased, the transmitting and receiving sensitivity increased significantly and then peaked and degraded at the measurements of transmitting and receiving. The ECS with the highest peak sensitivity obtained by laser patterning had a bandwidth comparable to that of the conventional ECS with silica aggregate electret, but the peak sensitivity was improved by up to 8 dB. Therefore, laser patterning could contribute to the improvement of ECS performance.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50139495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","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 wrist-watch type biosensing system for real-time sweat lactate monitoring 用于汗液乳酸实时监测的手表型生物传感系统的研制
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-21 DOI: 10.1002/ecj.12408
Sakae Konno, Hiroyuki Kudo
{"title":"Development of wrist-watch type biosensing system for real-time sweat lactate monitoring","authors":"Sakae Konno,&nbsp;Hiroyuki Kudo","doi":"10.1002/ecj.12408","DOIUrl":"https://doi.org/10.1002/ecj.12408","url":null,"abstract":"<p>A wrist-watch type biosensing system for real-time sweat lactic acid (LA) monitoring was fabricated and tested. The system consists of a microfluidic LA biosensor, a carrier-flow supplying device, and a sampling device for transporting whole secretions at the skin surface to the biosensor by continuous flow of phosphate-buffered saline (PBS). The perfusion test of PBS onto the skin surface by using the sampling device resulted in less than 1% leakage frequency at the collection site. The carrier-flow supplying device was able to feed PBS regardless of the body angle. When the subject wearing the device performed resistance training (lateral raise, 20 repetitions, 12.5 kg dumbbells), the LA secretion increased from 2 µg/cm<sup>2</sup>/min to 16 µg/cm<sup>2</sup>/min in response to the exercise, and then recovered to the baseline. The setup time for the measurement was less than 60 s. This indicates that the wrist-watch device can readily measure LA dynamics on the skin surface under conditions of the subject.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50139496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effects of bedtime mouthwash use on sleep: A field sleep study using wristwatch-type heart rate monitoring devise 睡前使用漱口水对睡眠的影响：一项使用手表式心率监测装置的现场睡眠研究
IF 0.3 4区 工程技术
Electronics and Communications in Japan Pub Date : 2023-08-21 DOI: 10.1002/ecj.12409
Mami Ishikawa, Yusuke Mon-Nai, Ayana Hirono, Yoshiyuki Oshima, Shusaku Nomura
{"title":"Effects of bedtime mouthwash use on sleep: A field sleep study using wristwatch-type heart rate monitoring devise","authors":"Mami Ishikawa,&nbsp;Yusuke Mon-Nai,&nbsp;Ayana Hirono,&nbsp;Yoshiyuki Oshima,&nbsp;Shusaku Nomura","doi":"10.1002/ecj.12409","DOIUrl":"https://doi.org/10.1002/ecj.12409","url":null,"abstract":"<p>This study aimed to test the efficacy of a mint-flavored mouthwash when it is used at bedtime for subsequent sleep in a field study setting, using a wristwatch-type heart rate (HR) monitoring devise. Using a within-subject experimental design, twenty healthy adults used three types of mouthwash having a different intensity of mint sensation (or water as a control) per one experiment night just before going to bed at their home environment, in a counterbalanced order. As for results, irrespective of the intensity of mint-flavored mouthwashes, the subjective score for “fatigue” and “refreshing” before sleep was decreased and increased, respectively. In addition, although a significant inhibition of HR decline in the sleep initiation period (0–30 min after bedtime) was observed with the use of mint-flavored mouthwashes compared with the control, the trend reversed subsequently as HR trended lower than for the control during 2–6 h after the bedtime. These findings suggest that the using mint-flavored mouthwashes at bedtime induces a positive mood before sleep and may improve physiological sleep. Moreover, this study illustrated the possible application and significant advantage of the use of wristwatch-type HR monitoring devise in a context of field study.</p>","PeriodicalId":50539,"journal":{"name":"Electronics and Communications in Japan","volume":"106 3","pages":""},"PeriodicalIF":0.3,"publicationDate":"2023-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50139497","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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