IEEE Transactions on Biomedical Circuits and Systems This is an RSS file. You can use it to subscribe to this data in your favourite RSS reader or to display this data on your own website or blog.

Early Termination Based Training Acceleration for an Energy-Efficient SNN Processor Design
In this paper, we present a novel early termination based training acceleration technique for temporal coding based spiking neural network (SNN) processor design. The proposed early termination scheme can efficiently identify the non-contributing training images during the training's feedforward process, and it skips the rest of the processes to save training energy and time. A metric to evaluate each input image's contribution to training has been developed, and it is compared with pre-determined threshold to decide whether to skip the rest of the training process. For the threshold selection, an adaptive th...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

Wireless, Battery-Free, and Fully Implantable Micro-Coil System for 7 T Brain MRI
An elegant solution for the concurrent transmission of data and power is essential for implantable wireless magnetic resonance imaging (MRI). This paper presents a self-tuned open interior microcoil (MC) antenna with three useful operating bands of 300 (7 T), 400, and 920 MHz, for blood vessel imaging, data telemetry, and efficient wireless transmission of power, respectively. The proposed open interior MC antenna contains two mirrorlike arms with diameters and lengths of 2.4 mm and 9.8 mm, respectively, to avoid blood flow blockage. To wirelessly show LED glow on a saline based phantom, the MC was fabricated on a flexible...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

Modulation Scheme Analysis for Low-Power Leadless Pacemaker Synchronization Based on Conductive Intracardiac Communication
This study demonstrates that reliable CIC-based LLPM synchronization is feasible at transmitted power levels $< $10 nW under realistic channel conditions and receiver noise performance. Therefore, modulation techniques such, as BB-MAN or OOK, are preferable over recently proposed alternatives, such as pulse position modulation or conductive impulse signaling, since they can be realized with fewer hardware resources and smaller bandwidth requirements. Ultimatel- , a baseband communication approach might be favored over OOK, due to the more efficient cardiac signal transmission and reduced transceiver complexity. (Source:...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

A Direct Digitizing Chopped Neural Recorder Using a Body-Induced Offset Based DC Servo Loop
This article presents a direct digitizing neural recorder that uses a body-induced offset based DC servo loop to cancel electrode offset (EDO) on-chip. The bulk of the input pair is used to create an offset, counteracting the EDO. The architecture does not require AC coupling capacitors which enables the use of chopping without impedance boosting while maintaining a large input impedance of 238 M$Omega$ over the whole 10 kHz bandwidth. Implemented in a 180 nm HV-CMOS process, the prototype occupies a silicon area of only 0.02 mm2 while consuming 12.8 μW and achieving 1.82 μV$_{text{rms}}$ of input-referred no...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

A Power-Efficient Brain-Machine Interface System With a Sub-mw Feature Extraction and Decoding ASIC Demonstrated in Nonhuman Primates
Intracortical brain-machine interfaces have shown promise for restoring function to people with paralysis, but their translation to portable and implantable devices is hindered by their high power consumption. Recent devices have drastically reduced power consumption compared to standard experimental brain-machine interfaces, but still require wired or wireless connections to computing hardware for feature extraction and inference. Here, we introduce a Neural Recording And Decoding (NeuRAD) application specific integrated circuit (ASIC) in 180 nm CMOS that can extract neural spiking features and predict two-dimensional beh...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

Hardware Circuits Design and Performance Evaluation of a Soft Lower Limb Exoskeleton
Soft lower limb exoskeletons (LLEs) are wearable devices that have good potential in walking rehabilitation and augmentation. While a few studies focused on the structure design and assistance force optimization of the soft LLEs, rarely work has been conducted on the hardware circuits design. The main purpose of this work is to present a new soft LLE for walking efficiency improvement and introduce its hardware circuits design. A soft LLE for hip flexion assistance and a hardware circuits system with scalability were proposed. To assess the efficacy of the soft LLE, the experimental tests that evaluate the sensor data acqu...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

Safety Enhancement by Optimizing Frequency of Implantable Cardiac Pacemaker Wireless Charging System
Wireless charging devices for implantable cardiac pacemakers have not been clinically applied. For actual applications, safety assessments of a wireless charging system must be conducted. For systems with a certain power, frequency is one of the important factors that directly affect safety. This paper aims to study the safety evaluation method and optimal operation frequency of a cardiac pacemaker wireless charging system. The wireless power transfer (WPT) model considering the coils’ AC resistance is established, which is more in line with the actual situation. The analytical solution to the current in coupling co...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

Group-Chopping: An 8-Channel, 0.04% Gain Mismatch, 2.1 µW 0.017 mm2 Instrumentation Amplifier for Bio-Potential Recording
An 8-channel AFE with a group-chopping instrumentation amplifier (GCIA) is proposed for bio-potential recording applications. The group-chopping technique cascades chopper switches to progressively swap channels and dynamically removes gain mismatch among all channels. An 8-phase non-overlapping clocking scheme is developed and achieves excellent between-channel gain mismatch characteristics. The dynamic offsets among all channels are mitigated by the GCIA as well. The GCIA is the first work that minimizes the gain mismatch across more than two channels. With the help of the group-chopping, combined with an area-efficient ...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

On-Chip Sinusoidal Signal Generators for Electrical Impedance Spectroscopy: Methodological Review
This paper reviews architectures and circuit implementations of on-chip sinusoidal signal generators (SSGs) for electrical impedance spectroscopy (EIS) applications. In recent years, there have been increasing interests in on-chip EIS systems, which measure a target material’s impedance spectrum over a frequency range. The on-chip implementation allows EIS systems to have low power and small form factor, enabling various biomedical applications. One of the key building blocks of on-chip EIS systems is on-chip SSG, which determines the frequency range and the analysis precision of the whole EIS system. On-chip SSGs a...
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

IEEE Transactions on Biomedical Circuits and Systems
Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication. (Source: IEEE Transactions on Biomedical Circuits and Systems)
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

Table of Contents
Presents the table of contents for this issue of the publication. (Source: IEEE Transactions on Biomedical Circuits and Systems)
Source: IEEE Transactions on Biomedical Circuits and Systems - June 1, 2022 Category: Biomedical Engineering Source Type: research

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Source: IEEE Transactions on Biomedical Circuits and Systems - April 1, 2022 Category: Biomedical Engineering Source Type: research

IEEE Circuits and Systems Society
Presents a listing of the editorial board, board of governors, current staff, committee members, and/or society editors for this issue of the publication. (Source: IEEE Transactions on Biomedical Circuits and Systems)
Source: IEEE Transactions on Biomedical Circuits and Systems - April 1, 2022 Category: Biomedical Engineering Source Type: research

TechRxiv: Share Your Preprint Research with the World!
Prospective authors are requested to submit new, unpublished manuscripts for inclusion in the upcoming event described in this call for papers. (Source: IEEE Transactions on Biomedical Circuits and Systems)
Source: IEEE Transactions on Biomedical Circuits and Systems - April 1, 2022 Category: Biomedical Engineering Source Type: research

A Flexible Wearable Electrooculogram System With Motion Artifacts Sensing and Reduction
Electrooculogram (EOG) is a well-known physiological metric picked up by placing two or more electrodes around the eyeball. EOG signals are known to be extremely susceptible to motion artifacts. This paper presents a single channel, wireless, wearable flexible EOG monitoring system with motion artifacts sensing and reduction feature. The system uses two non-contact electrode pairs for EOG/motion artifacts detection and motion artifacts reduction. It is implemented on a four-layer flexible polyimide substrate. It is light-weight (only 8.75 gram), battery operated, and uses a microcontroller and a BLE 5.0 transceiver ...
Source: IEEE Transactions on Biomedical Circuits and Systems - April 1, 2022 Category: Biomedical Engineering Source Type: research