Article
Neurosciences
Eve Marder, Sonal Kedia, Ekaterina O. Morozova
Summary: Research on small rhythmic circuits, degenerate circuits, and neuromodulation provides insights into circuit dynamics, stability, and regulation. Molecular studies contribute to understanding individual variations and the regulation of neuronal excitability.
CURRENT OPINION IN NEUROBIOLOGY
(2022)
Article
Multidisciplinary Sciences
Qiang Liu, Benjamin J. Bell, Dong Won Kim, Sang Soo Lee, Mehmet F. Keles, Qili Liu, Ian D. Blum, Annette A. Wang, Elijah J. Blank, Jiali Xiong, Joseph L. Bedont, Anna J. Chang, Habon Issa, Jeremiah Y. Cohen, Seth Blackshaw, Mark N. Wu
Summary: This study reveals the role of a clock-output molecule in reducing arousal circuit excitability during the active phase, suggesting a multifaceted role for the circadian clock in regulating arousal.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Wandee Petchmaneelumka, Vanchai Riewruja, Kanoknuch Songsuwankit, Apinai Rerkratn
Summary: This paper introduces a temperature-compensation technique to improve the accuracy of a resolver. By utilizing this technique, the impact of ambient temperature changes on resolver signals can be effectively mitigated. Experimental results demonstrate that the proposed technique can successfully compensate for wide variations in ambient temperature.
Article
Engineering, Electrical & Electronic
Tiangang Li, Bo Gao, Xin Zhao, Min Gong
Summary: This paper presents an advanced topology of bandgap voltage reference (BGR) which consists of a novel curvature-compensated circuit and a current-mode trimming circuit. By introducing these designs, the performance of the BGR is improved and the PVT stabilities are enhanced.
MICROELECTRONICS JOURNAL
(2022)
Article
Energy & Fuels
Min Lei, Tao Peng, Feng Zhou, Jicheng Yu, Siyuan Liang, Jiale Liu, Lei Li
Summary: This paper proposes a TMR-based current sensor with temperature error compensation for measuring small currents in power systems. The design is optimized through theoretical and simulation analysis of the magnetic loop structure, magnetic core parameters, and secondary circuit. An improved temperature error compensation circuit is proposed to reduce sensitivity drift. The experimental results demonstrate that the proposed TMR current sensor has a wide measurement range and high sensitivity, with a reduced temperature coefficient through temperature error compensation.
Review
Chemistry, Multidisciplinary
Han Gao, Mingjie Zou, Chenming Zhong, Jianbang Zhuang, Junjie Lin, Zhian Lu, Zhizhong Jiang, Yijun Lu, Zhong Chen, Weijie Guo
Summary: This review focuses on the pixel-driving technology of micro-LED displays and discusses its characteristics. It also proposes the potential development of smart and efficient displays by combining memristor arrays with the pixel driving circuit of micro-LEDs.
Article
Physics, Multidisciplinary
Hongtao Hua, Huaguang Gu
Summary: This paper simulates rhythm transitions modulated by several physiological factors and investigates the ionic currents and underlying bifurcation mechanism of respiratory rhythm transitions. The findings are significant for the modulation of respiratory rhythms.
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2022)
Article
Computer Science, Information Systems
S. M. Rezaul Hasan
Summary: This paper presents a low-power CMOS temperature and process compensated 150.9 MHz VHF voltage-controlled-ring-oscillator (VCRO) for on-chip integration. The design uses a temperature sensor and feedback control circuitry to generate the internal control voltage for the VCRO, ensuring oscillation at the desired frequency despite temperature variations. Simulation results demonstrate that the proposed design maintains the oscillator's frequency within 0.39% from -10 ? to 90 ?.
Article
Chemistry, Analytical
Sheng-Ching Wang, Bo-Ren Xie, San-Ming Huang
Summary: A systematic approach is used to design and analyze a small-sized eddy current displacement sensor. Simulations are conducted to optimize its winding structure and dimensions. A linear fitting method is developed to convert the AC displacement signal to a DC signal. Additionally, a compensation method is proposed to reduce the temperature drift of the sensor at different operating temperatures.
Article
Computer Science, Information Systems
Shengli Zhang, Jing Wan, Jinxiang Zhao, Zhe Yang, Yuepeng Yan, Xiaoxin Liang
Summary: This study presents a two-stage driver amplifier based on an enhanced feedback technique for a broadband GaN pseudo high-electron-mobility transistor (pHEMT) to achieve a relatively flat frequency response over a wide frequency band. Additionally, a bias circuit with temperature compensation was designed to reduce current fluctuation caused by environmental temperature.
Article
Chemistry, Analytical
Shaohua Zhou, Shizhe Wei, Jian Wang
Summary: This study presents a differential stacked millimeter-wave wideband power amplifier with a compensation circuit to reduce the fluctuation of gain with changing temperature.
Article
Engineering, Electrical & Electronic
Po-Hui Yang, Ying-Sheng Chang, Che-Tsung Chan
Summary: This study presents a temperature-compensated potentiometric dopamine (DA) biosensor implemented on a flexible printed circuit board (FPCB). The enzymatic aluminum-doped zinc oxide (AZO) sensing window consists of a readout circuit based on a chip designed in this study. The current temperature of the solution under test is obtained from a temperature sensor on the other side of the sensor. Linear temperature compensation is performed with a custom readout IC implemented in a 0.18-µm CMOS process, and the DA biosensor and a commercial temperature-sensing component are mounted on the FPCB. The drift and repeatability experiments demonstrate that the DA biosensor performs well under long-term and repeated measurements. The measurement errors caused by solution temperature changes from 20 degrees C to 40 degrees C are reduced by 86%.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Engineering, Electrical & Electronic
Lanxiang Xiao, Lei Chen, Fengwei An
Summary: This study developed a mechanical stress sensor for runtime stress measurement during the package processes of integrated circuit chips. The sensor, fabricated in a standard 180nm CMOS process, utilizes a temperature-compensation RC oscillator circuit to convert the mechanical stress-induced die warpage into frequency output, enabling measurement of thermally induced stresses over a wide temperature range. Unlike complicated calibrations and advanced measurement equipment, the frequency can be easily measured with a small chip area (<0.569 mm(2)) and low power consumption (<22.9 mu W). The sensitivity and stability of metal-insulator-metal (MIM) and metal-oxide-metal (MOM) capacitors in the sensing array are verified, with MIM exhibiting higher sensitivity and excellent linear response of the sensor circuit.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Engineering, Electrical & Electronic
Chunlei Jiang, Anning Ren, Taiji Dong, Hao Wu, Kaichuan Xu, Peng Chen
Summary: An optical voltage sensor based on self-mixing interference (SMI) and the converse piezoelectric effect of a piezoelectric ceramic (PZT) is proposed and demonstrated. A single-mode fiber is coiled around the PZT and the PZT deformation modulates the phase of light propagation in the fiber. SMI is formed by light reflected at the fiber end back into the laser cavity, and the voltage is obtained by demodulating the output signal with the reverse point recognition algorithm. The sensor shows good linearity with a relative error within ±2%, meeting the standard IEC 60044-7.
OPTICAL FIBER TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Mengxiang Liu, Qi Fan, Jian Zhao, Yan Su
Summary: This paper proposes a system phase analysis for MEMS quadruple mass gyroscope (QMG) and improves the stability by 20 times through improving front-end amplifier design. Experimental and theoretical noise model analysis helps identify dominant noise sources, leading to the design of a two-stage capacitive amplifier to reduce noise and improve stability.
IEEE SENSORS JOURNAL
(2021)
Article
Biology
Eve Marder
Summary: Challenging the spread of falsehoods is an important way to respect the truth in both science and the broader world.
Editorial Material
Neurosciences
Eve Marder
Article
Biochemistry & Molecular Biology
Sonal Kedia, Eve Marder
Summary: In this study, the researchers serendipitously discovered that the crab STG exhibits increased neuronal activity upon exposure to blue light. They found that this response may be mediated by cryptochromes, which are blue-light photoreceptors involved in circadian behaviors.
Editorial Material
Biology
Eve Marder
Summary: Researchers should only be listed as authors on a paper if they have made substantive contributions to it.
Letter
Multidisciplinary Sciences
Yunliang Zang, Eve Marder
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Biology
Srinivas Gorur--Shandilya, Elizabeth M. Cronin, Anna C. Schneider, Sara Ann Haddad, Philipp Rosenbaum, Dirk Bucher, Farzan Nadim, Eve Marder
Summary: Neural circuits can generate various spike patterns, but only some are functional. However, the study of circuit dynamics and how they generate functional dynamics is limited by a lack of description. By recording the circuit dynamics of the pyloric circuit in Cancer borealis, statistical features of spike times were used to visualize the patterns generated by this circuit. This approach captures the variability of functional rhythms and diversity of atypical dynamics in a single map.
Article
Neurosciences
Mara C. P. Rue, Natasha Baas-Thomas, Priya Iyenger, Lara Scaria, Eve Marder
Summary: The crustacean cardiac ganglion is influenced by multiple modulators, and the integration of synaptic input occurs at the somata of large cells. The distribution patterns of immunoreactivity suggest the presence of chemical synapses and neuropil. These findings provide important morphological evidence for understanding neural control of the cardiac system.
JOURNAL OF COMPARATIVE NEUROLOGY
(2022)
Editorial Material
Biology
Eve Marder
Summary: Changes in science have diminished the opportunities for trainees to experience the joy of discovery over the past 50 years.
Article
Multidisciplinary Sciences
Mara C. P. Rue, Leandro M. Alonso, Eve Marder
Summary: The study investigated the effects of altered extracellular potassium concentration on the output of the pyloric circuit in the crab, revealing changes in neuronal activity and circuit robustness in response to high potassium saline and subsequent challenges.
Editorial Material
Neurosciences
L. F. Abbott, Eve Marder
Editorial Material
Biology
Eve Marder
Article
Multidisciplinary Sciences
Leandro M. Alonso, Mara C. P. Rue, Eve Marder
Summary: Neurons use intracellular calcium concentrations to regulate their excitability, and models with multiple sensors can distinguish different activity patterns. However, previous models with multiple sensors displayed instabilities leading to unbounded growth of conductances. By introducing a nonlinear degradation term, we prevent conductances from growing beyond a certain bound. The modified model can recover from perturbations and shows that caution must be exercised in interpreting manipulations that mimic increased neuronal activity.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Yunliang Zang, Eve Marder
Summary: Biological neurons exhibit cell-to-cell variability, but still maintain key firing properties in the presence of unpredictable perturbations and stochastic noise. Through a study on the lateral pyloric neuron in the crab stomatogastric ganglion, which involves varied conductances in multi-compartment models, it is found that coupling between the axon and other compartments is crucial for the preservation of rebound bursting. Deviations from biologically realistic coupling range decrease the neuronal tolerance to conductance variations. Therefore, the morphological features of these neurons contribute to their robustness and expand the variability of maintaining desired output patterns.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Review
Neurosciences
Shimon Marom, Eve Marder
Summary: Neuronal membrane excitability must be resilient to perturbations that can occur over various time scales. Two complementary mechanisms, namely dynamic parameter regulation and self-regulation based on ion channel kinetics, contribute to the resilience of membrane excitability. The study also highlights the challenges in studying these processes and the consequences of these resilience mechanisms.
NATURE REVIEWS NEUROSCIENCE
(2023)