Results 61 to 70 of about 2,687 (171)

Synchronous monitoring of brain‐heart electrophysiology using heart rate variability coupled with rapid quantitative electroencephalography in orthostatic hypotension patients with α‐synucleinopathies: Rapid prediction of orthostatic hypotension and preliminary exploration of brain stimulation therapy

CNS Neuroscience &Therapeutics, Volume 30, Issue 2, February 2024.
This study achieved the prediction of OH occurrence in patients with α‐synucleinopathies using the ultra‐short‐term resting heart rate variability (HRV). It also utilized HRV coupled with quantitative electroencephalography technology to explore the brain‐heart correlation, shedding light on identifying the target areas in brain stimulation therapy ...
Lin Lin, Yingzhe Cheng, Peilin Huang, Jiejun Zhang, Jiahao Zheng, Xiaodong Pan   +5 more
wiley   +1 more source

A 0.6-µW Chopper Amplifier Using a Noise-Efficient DC Servo Loop and Squeezed-Inverter Stage for Power-Efficient Biopotential Sensing

Sensors, 2020
To realize an ultra-low-power and low-noise instrumentation amplifier (IA) for neural and biopotential signal sensing, we investigate two design techniques. The first technique uses a noise-efficient DC servo loop (DSL), which has been shown to be a high
Xuan Thanh Pham, Ngoc Tan Nguyen, Van Truong Nguyen, Jong-Wook Lee   +3 more
doaj   +1 more source

Alternative Post-Processing on a CMOS Chip to Fabricate a Planar Microelectrode Array

Sensors, 2011
We present an alternative post-processing on a CMOS chip to release a planar microelectrode array (pMEA) integrated with its signal readout circuit, which can be used for monitoring the neuronal activity of vestibular ganglion neurons in newborn Wistar ...
Blanca Cervantes-Sanchez, Blanca S. Soto-Cruz, Enrique Soto, Carlos Zuñiga-Islas, Johan J. Estrada-López, Francisco López-Huerta, Agustín L. Herrera-May   +6 more
doaj   +1 more source

Real-Time Telemetry System for Amperometric and Potentiometric Electrochemical Sensors

Sensors, 2011
A real-time telemetry system, which consists of readout circuits, an analog-to-digital converter (ADC), a microcontroller unit (MCU), a graphical user interface (GUI), and a radio frequency (RF) transceiver, is proposed for amperometric and ...
Ching-Hsing Luo, Cheng-Feng Wu, Wen-Fong Wang, Tse-Chuan Chou, Chih-Hsien Hu, Kuo-Chuan Ho, Chia-Yu Lin, Hong-Yi Huang, Shu-Chun Chen, Wei-Song Wang   +9 more
doaj   +1 more source

A Novel Low-Power CMOS Operational Amplifier with High Slew Rate and High Common-Mode Rejection Ratio

, 2010
Problem statement: High speed operational amplifier is always an on-go ing research topic since major high speed application are needed. Approach: A two-stage operational amplifier (op amp) is designed, simulated and fabricated using a UMC 0 .5 µm 2P2M ...
Ismail I. Nabhan, M. Abdallah
semanticscholar   +1 more source

Multi-Objective Learning Automata for Design and Optimization a Two-Stage CMOS Operational Amplifier

Iranian Journal of Electrical and Electronic Engineering, 2020
In this paper, we propose an efficient approach to design optimization of analog circuits that is based on the reinforcement learning method. In this work, Multi-Objective Learning Automata (MOLA) is used to design a two-stage CMOS operational amplifier (
N. Sayyadi Shahraki, S. H. Zahiri
doaj  

A High CMRR and Sub-pA Current Sensing Front-End for Biomedical Applications in FD-SOI

IEEE Access
This paper presents a high-resolution analog front-end (AFE) circuit. The AFE integrates a low-noise current amplifier and a second-order delta-sigma modulator (DSM).
Xingchen Xu, Fengling Qin, Silong Chen, Xin Lin, Shilong Chen, Zhiqiang Li   +5 more
doaj   +1 more source

A Novel Analog Interface Using 3D Printed Electrodes for Mixed Voltage-Current Mode EEG

IEEE Access
This work presents a comprehensive study on a novel analog interface for single- and dual-channel electroencephalographic (EEG) analysis, employing current-mode active building blocks (ABBs), specifically the second-generation current conveyor (CCII) and
Andrea Rotondo, Gianluca Barile, Giuseppe Ferri, Vincenzo Stornelli   +3 more
doaj   +1 more source

Performance Evaluation of Wavelet De-Noising Schemes for Suppression of Power Line Noise in Electrocardiogram Signals

Nigerian Journal of Technological Development, 2021
Power line noise introduces distortions to recorded electrocardiogram (ECG) signals. These distortions compromise the integrity and negatively affect the interpretation of the ECG signals.
Y. K. Ahmed, A. R. Zubair
doaj  

A 1.87 µW Capacitively Coupled Chopper Instrumentation Amplifier with a 0.36 mV Output Ripple and a 1.8 GΩ Input Impedance for Biomedical Recording

Journal of Low Power Electronics and Applications
Chopper and capacitively coupled techniques are employed in instrumentation amplifiers to create capacitively coupled chopper instrumentation amplifiers (CCIAs) that obtain a high noise power efficiency.
Xuan Phuong Tran, Xuan Thuc Kieu, Xuan Thanh Pham, Duy Phong Pham, Manh Kha Hoang   +4 more
doaj   +1 more source