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, 2012, 783-6

A Wireless 64-channel ECoG Recording Electronic for Implantable Monitoring and BCI Applications: WIMAGINE

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A Wireless 64-channel ECoG Recording Electronic for Implantable Monitoring and BCI Applications: WIMAGINE

G Charvet et al. Conf Proc IEEE Eng Med Biol Soc.

Abstract

A wireless, low power, 64-channel data acquisition system named WIMAGINE has been designed for ElectroCorticoGram (ECoG) recording. This system is based on a custom integrated circuit (ASIC) for amplification and digitization on 64 channels. It allows the RF transmission (in the MICS band) of 32 ECoG recording channels (among 64 channels available) sampled at 1 kHz per channel with a 12-bit resolution. The device is powered wirelessly through an inductive link at 13.56 MHz able to provide 100mW (30mA at 3.3V). This integration is a first step towards an implantable device for brain activity monitoring and Brain-Computer Interface (BCI) applications. The main features of the WIMAGINE platform and its architecture will be presented, as well as its performances and in vivo studies.

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