2010 Biomedical Circuits and Systems Conference (BioCAS)最新文献_第3页

A phase synchronization and magnitude processor VLSI architecture for adaptive neural stimulation 一种用于自适应神经刺激的相位同步和幅度处理器VLSI架构

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709557

K. Abdelhalim, V. Smolyakov, R. Genov

引用次数: 13

Implantable stimulator for bipolar stimulation without charge balancing circuits 无电荷平衡电路的双极刺激植入式刺激器

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709606

Hosung Chun, T. Lehmann, Yuanyuan Yang

引用次数: 23

A power efficient programmable gain boosting current mirror for biomedical electronics 一种用于生物医学电子学的高能效可编程增益增强电流反射镜

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709612

Hosung Chun, T. Lehmann

引用次数: 1

A CMOS chip with active imaging and stimulation pixels for implantable retinal prosthesis 用于植入式视网膜假体的有源成像和刺激像素CMOS芯片

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709580

Xu Zhang, Weihua Pei, Beiju Huang, Hongda Chen

{"title":"A CMOS chip with active imaging and stimulation pixels for implantable retinal prosthesis","authors":"Xu Zhang, Weihua Pei, Beiju Huang, Hongda Chen","doi":"10.1109/BIOCAS.2010.5709580","DOIUrl":"https://doi.org/10.1109/BIOCAS.2010.5709580","url":null,"abstract":"A prototype chip with 4×4 active pixels for implanting in blind patients affected by outer retinal degeneration is presented in this paper. This visual prosthesis chip consists of the imaging and stimulation pixels array, power recovery unit and data and clock receiver. The chip imitates the degenerated photoreceptor cells, senses the incident light and stimulates the remaining healthy layers of retina or optic nerve. Each pixel integrates photodiode and stimulus pulse generator, which converts the illumination on the eyes into bi-phasic current pulses with 4-bit amplitude resolution and 3-bit frequency resolution. On-Chip charge cancellation modules are used to discharge each electrode site for tissue safety. The power is recovered by on-chip shottky-diodes rectifier and low-dropout regulator through inductive electromagnetic coupling with a 4 MHz carrier. The data and clock receiver receives the modulated outside command data from power carrier and controls the imaging and stimulation pixels array. The prototype chip is designed and fabricated in 0.35-μm N-well CMOS (Complementary Metal Oxide Semiconductor) 2P4M Mix-signal process, with the chip area of 2.5×2.5 mm2.","PeriodicalId":440499,"journal":{"name":"2010 Biomedical Circuits and Systems Conference (BioCAS)","volume":"417 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132682483","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

An open-source platform for the development of microcontroller based multi-wavelength oximetry 一个开发基于单片机的多波长血氧仪的开源平台

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709626

Onur Guven, F. Geier, D. Banks, C. Toumazou

{"title":"An open-source platform for the development of microcontroller based multi-wavelength oximetry","authors":"Onur Guven, F. Geier, D. Banks, C. Toumazou","doi":"10.1109/BIOCAS.2010.5709626","DOIUrl":"https://doi.org/10.1109/BIOCAS.2010.5709626","url":null,"abstract":"We present here, an open-source printed circuit board (PCB) platform for the prototyping, testing and trialing of non-invasive oximeter devices. The system is designed around a dspic33fj128gp804 microcontroller with coding in C. It can control over 100 LED and photodiode devices and has two modes, one for calibration and one for signal interrogation. At the top-level, the microcontroller has ports dedicated for LED and photodiode control, with EEPROM and SD card for storage, alphanumeric display for menu control and graphical display showing relevant waveforms. Further the device is battery powered and rechargeable. This device was designed with consideration to robustness, power-efficient operation, expandable hardware and algorithms and cheap off the shelf components, ensuring it can be used and repaired in low-resource settings. We show a working example device calculating total Haemoglobin, which has relevance World-Wide as a non-invasive anaemia detector. Continuous operation the device consumes approx. 222 mW. Under these circumstances four AA batteries (2650 mAh) could operate for over eight hours allowing general use operation of several weeks, without charging.","PeriodicalId":440499,"journal":{"name":"2010 Biomedical Circuits and Systems Conference (BioCAS)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132894431","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: 3

Exploring olfactory sensory networks: Simulations and hardware emulation 探索嗅觉感官网络:模拟和硬件仿真

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709623

M. Beyeler, F. Stefanini, H. Proske, G. Galizia, E. Chicca

{"title":"Exploring olfactory sensory networks: Simulations and hardware emulation","authors":"M. Beyeler, F. Stefanini, H. Proske, G. Galizia, E. Chicca","doi":"10.1109/BIOCAS.2010.5709623","DOIUrl":"https://doi.org/10.1109/BIOCAS.2010.5709623","url":null,"abstract":"Olfactory stimuli are represented in a high-dimensional space by neural networks of the olfactory system. A great deal of research in olfaction has focused on this representation within the first processing stage, the olfactory bulb (vertebrates) or antennal lobe (insects) glomeruli. In particular the mapping of chemical stimuli onto olfactory glomeruli and the relation of this mapping to perceptual qualities have been investigated. While a number of studies have illustrated the importance of inhibitory networks within the olfactory bulb or the antennal lobe for the shaping and processing of olfactory information, it is not clear how exactly these inhibitory networks are organized to provide filtering and contrast enhancement capabilities. In this work the aim is to study the topology of the proposed networks by using software simulations and hardware implementation. While we can study the dependence of the activity on each parameter of the theoretical models with the simulations, it is important to understand whether the models can be used in robotic applications for real-time odor recognition. We present the results of a linear simulation, a spiking simulation with I&F neurons and a real-time hardware emulation using neuromorphic VLSI chips. We used an input data set of neurophysiological recordings from olfactory receptive neurons of insects, especially Drosophila.","PeriodicalId":440499,"journal":{"name":"2010 Biomedical Circuits and Systems Conference (BioCAS)","volume":"344 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132979735","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: 16

Adaptive threshold spike detection using stationary wavelet transform for neural recording implants 基于平稳小波变换的自适应阈值尖峰检测

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709558

Yuning Yang, A. Kamboh, J. M. Andrew

引用次数: 29

A hardware-efficient lowpass filter design for biomedical applications 用于生物医学应用的硬件高效低通滤波器设计

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709588

P. Demosthenous, N. Nicolaou, J. Georgiou

引用次数: 13

Design of a high-voltage analog front-end circuit for integration with CMUT arrays 用于集成CMUT阵列的高压模拟前端电路的设计

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709630

Parisa Behnamfar, S. Mirabbasi

引用次数: 19

A biologically inspired collision detection algorithm using differential optic flow imaging 基于差分光流成像的生物启发碰撞检测算法

2010 Biomedical Circuits and Systems Conference (BioCAS) Pub Date : 2010-11-01 DOI: 10.1109/BIOCAS.2010.5709618

M. Sarkar, D. S. S. Bello, C. van Hoof, A. Theuwissen

引用次数: 3