Search Results - "Mora Lopez, Carolina"
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1
An Online-Spike-Sorting IC Using Unsupervised Geometry-Aware OSort Clustering for Efficient Embedded Neural-Signal Processing
Published in IEEE journal of solid-state circuits (01-11-2023)“…As neural-recording devices get denser and generate more data due to ever higher channel counts, on-chip and online neural signal processor (NSP) becomes…”
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2
A Neural Probe With Up to 966 Electrodes and Up to 384 Configurable Channels in 0.13 $\mu$m SOI CMOS
Published in IEEE transactions on biomedical circuits and systems (01-06-2017)“…In vivo recording of neural action-potential and local-field-potential signals requires the use of high-resolution penetrating probes. Several international…”
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3
Neuropixels Data-Acquisition System: A Scalable Platform for Parallel Recording of 10 000+ Electrophysiological Signals
Published in IEEE transactions on biomedical circuits and systems (01-12-2019)“…Although CMOS fabrication has enabled a quick evolution in the design of high-density neural probes and neural-recording chips, the scaling and miniaturization…”
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4
Multiplexed Surface Electrode Arrays Based on Metal Oxide Thin‐Film Electronics for High‐Resolution Cortical Mapping
Published in Advanced science (01-03-2024)“…Electrode grids are used in neuroscience research and clinical practice to record electrical activity from the surface of the brain. However, existing passive…”
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5
A Multichannel Integrated Circuit for Electrical Recording of Neural Activity, With Independent Channel Programmability
Published in IEEE transactions on biomedical circuits and systems (01-04-2012)“…Since a few decades, micro-fabricated neural probes are being used, together with microelectronic interfaces, to get more insight in the activity of neuronal…”
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6
Neuropixels 2.0: A miniaturized high-density probe for stable, long-term brain recordings
Published in Science (American Association for the Advancement of Science) (16-04-2021)“…Measuring the dynamics of neural processing across time scales requires following the spiking of thousands of individual neurons over milliseconds and months…”
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7
A Multimodal CMOS MEA for High-Throughput Intracellular Action Potential Measurements and Impedance Spectroscopy in Drug-Screening Applications
Published in IEEE journal of solid-state circuits (01-11-2018)“…Multi-electrode arrays (MEAs) are a candidate technology to screen cardiotoxicity in vitro because they enable noninvasive recording of cardiac beating rate,…”
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8
An AC-Coupled 1st-order Δ-ΔΣ Readout IC for Area-Efficient Neural Signal Acquisition
Published in IEEE journal of solid-state circuits (01-04-2023)“…The current demand for high-channel-count neural-recording interfaces calls for more area- and power-efficient readout architectures that do not compromise…”
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9
Actively Multiplexed μECoG Brain Implant System With Incremental-ΔΣ ADCs Employing Bulk-DACs
Published in IEEE journal of solid-state circuits (01-11-2022)“…Fundamental neuroscience research and high-performance neuro-prostheses require large-scale brain interfaces with ever-greater spatial resolution across a…”
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10
A Compact Quad-Shank CMOS Neural Probe With 5,120 Addressable Recording Sites and 384 Fully Differential Parallel Channels
Published in IEEE transactions on biomedical circuits and systems (01-12-2019)“…Large-scale in vivo electrophysiology requires tools that enable simultaneous recording of multiple brain regions at single-neuron level. This calls for the…”
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11
A Compact, Low-Power Analog Front-End With Event-Driven Input Biasing for High-Density Neural Recording in 22-nm FDSOI
Published in IEEE transactions on circuits and systems. II, Express briefs (01-03-2022)“…An ultra-small-area, low-power analog front-end (AFE) for high-density neural recording is presented in this brief. It features an 11-bit incremental…”
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12
High-Density Electrical Recording and Impedance Imaging With a Multi-Modal CMOS Multi-Electrode Array Chip
Published in Frontiers in neuroscience (25-06-2019)“…Multi-electrode arrays, both active or passive, emerged as ideal technologies to unveil intricated electrophysiological dynamics of cells and tissues. Active…”
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13
A 384-Channel Online-Spike-Sorting IC Using Unsupervised Geo-OSort Clustering and Achieving 0.0013mm2/Ch and 1.78\mu \text
Published in 2023 IEEE International Solid- State Circuits Conference (ISSCC) (19-02-2023)“…As neural-recording devices get denser and generate more data [1], on-chip and online neural-signal processing becomes crucial to reduce the data-transmission…”
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Conference Proceeding -
14
Fine-scale mapping of cortical laminar activity during sleep slow oscillations using high-density linear silicon probes
Published in Journal of neuroscience methods (15-03-2019)“…•A high-density, linear silicon-based probe was developed for in vivo laminar recordings.•The array of 256 closely-packed titanium nitride microelectrodes…”
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15
A 0-to-35mA NMOS Capacitor-Less LDO with Dual-Loop Regulation Achieving 3ns Response Time and 1pF-to-10nF Loading Range
Published in ESSCIRC 2023- IEEE 49th European Solid State Circuits Conference (ESSCIRC) (11-09-2023)“…This paper presents a capacitor-less low-dropout voltage regulator (LDO) based on an NMOS pass transistor and a dual-loop regulation. The first…”
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Conference Proceeding -
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A 128-channel neural stimulation and recording ASIC for scalable cortical visual prosthesis
Published in ESSCIRC 2023- IEEE 49th European Solid State Circuits Conference (ESSCIRC) (11-09-2023)“…Blindness affects millions of people around the world, being triggered by various defects within the human visual system. Different kinds of prostheses have…”
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Conference Proceeding -
17
A 108 dB DR Δ∑-∑M Front-End With 720 mVpp Input Range and >±300 mV Offset Removal for Multi-Parameter Biopotential Recording
Published in IEEE transactions on biomedical circuits and systems (01-04-2021)“…The recording of biopotential signals using techniques such as electroencephalography (EEG) and electrocardiography (ECG) poses important challenges to the…”
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18
A 10V Compliant 16-Channel Stimulator ASIC with sub-10nA Mismatch and Simultaneous ETI Sensing for Selective Vagus Nerve Stimulation
Published in Proceedings of the Custom Integrated Circuits Conference (21-04-2024)“…The vagus nerve (VN) is a key part of the parasympathetic nervous system connecting the brain to various organs. VN stimulation has been FDA-approved for…”
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Conference Proceeding -
19
In vitro recording of neural activity using carbon nanosheet microelectrodes
Published in Carbon (New York) (01-02-2014)“…The advent of nanotechnology has revolutionised our ability to engineer electrode interfaces. These are particularly attractive to measure biopotentials, and…”
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20
A Compact Chopper Stabilized Δ-ΔΣ Neural Readout IC With Input Impedance Boosting
Published in IEEE open journal of solid-state circuits (2021)“…This paper presents a scalable neural recording analog front-end architecture enabling simultaneous acquisition of action potentials, local field potentials,…”
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