An Implantable 64-Channel Wireless Microsystem for Single-Unit Neural Recording

2009/09/01 by Amir M. Sodagar, Gayatri E. Perlin, Ying Yao +2 · 14 citations
Neuroscience · Engineering · #Neuroscience and Neural Engineering #EEG and Brain-Computer Interfaces #Advanced Memory and Neural Computing

paper · doi:10.1109/jssc.2009.2023159

Abstract

This paper reports an implantable microsystem capable of recording neural activity simultaneously on 64 channels, wirelessly transmitting spike occurrences to an external interface. The microsystem also allows the user to examine the spike waveforms on any channel with 8 bit resolution. Signals are amplified by 60 dB with a programmable bandwidth from < 100 Hz to 10 kHz. The input-referred noise is 8 ¿V <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">rms</sub> . The channel scan rate for spike detection is 62.5 kS/sec using a 2 MHz clock. The system dissipates 14.4 mW at 1.8 V, weighs 275 mg, and measures 1.4 cm 1.55 cm.

Citations

• The Utah Intracortical Electrode Array: A recording structure for potential brain-computer interfaces
• A Low-Power Integrated Circuit for a Wireless 100-Electrode Neural Recording System

Cited by

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• Active C4 Electrodes for Local Field Potential Recording Applications. [europepmc]
• Physiological properties of brain-machine interface input signals. [europepmc]
• An Implantable Wireless Neural Interface System for Simultaneous Recording and Stimulation of Peripheral Nerve with a Single Cuff Electrode. [europepmc]
• A Time-Domain Analog Spatial Compressed Sensing Encoder for Multi-Channel Neural Recording. [europepmc]
• An Implantable Peripheral Nerve Recording and Stimulation System for Experiments on Freely Moving Animal Subjects. [europepmc]
• Fabrication and Microassembly of a mm-Sized Floating Probe for a Distributed Wireless Neural Interface. [europepmc]
• Neural Probes for Chronic Applications. [europepmc]
• Multi-Channel Neural Recording Implants: A Review. [europepmc]
• Wireless, miniaturized, semi-implantable electrocorticography microsystem validated in vivo. [europepmc]
• Intertwined-pulse modulation for compressive data telemetry. [europepmc]
• Non-human primate models and systems for gait and neurophysiological analysis. [europepmc]
• Neural spike compression through salient sample extraction and curve fitting dedicated to high-density brain implants. [europepmc]

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