A 64-channels neural interface for biopotentials recording and PNS stimulation

BISONI, LORENZO;CARBONI, CATERINA;PUDDU, ROBERTO;BARABINO, GIANLUCA;PANI, DANILO;RAFFO, LUIGI;BARBARO, MASSIMO
2017

Abstract

A biomedical interface that combines into a single and compact device the recording of biopotentials and the electrical stimulation of neural fibres is presented. It is intended for enabling the control over a robotic hand and for restoring the sensory feedback in amputees by directly interfacing the peripheral nervous system (PNS) in closed-loop. A modular system consisting in one or more independent 16-channels bidirectional units was conceived. Each module is based on three 0.35μm bulk-CMOS integrated circuits (ICs): a recording unit, a High-Voltage (HV) stimulator and a HV booster. A tunable bandwidth (10Hz-8kHz) allows the recording IC to acquire both electroneurographyc (ENG) and electromiographyc (EMG) signals with a programmable gain up to 43.5dB. The signals are then converted into a digital domain by means of a ΣΔ converter. Due to the typical high impedance at the electrode-tissue interface, a programmable HV booster that increases the stimulation voltage up to 19V was designed. It is directly controlled by the stimulation module that generates current-based pulses with a programmable amplitude and pulse-width. The whole system was validated by means of in-vivo experiments in rats.
Inglese
2017 39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)
978-1-5090-2809-2
IEEE (Institute of Electrical and Electronics Engineers)
STATI UNITI D'AMERICA
1938
1941
4
39th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2017
Contributo
Esperti anonimi
11-15 July 2017
Seogwipo, South Korea
internazionale
scientifica
4 Contributo in Atti di Convegno (Proceeding)::4.1 Contributo in Atti di convegno
Bisoni, Lorenzo; Carboni, Caterina; Puddu, Roberto; Barabino, Gianluca; Pani, Danilo; Raffo, Luigi; Mueller, Matthias; Stieglitz, Thomas; Del Valle, Jaume; De La Oliva, Natalia; Delgado martinez, Ignacio; Navarro, Xavier; Barbaro, Massimo
273
13
4.1 Contributo in Atti di convegno
none
info:eu-repo/semantics/conferencePaper
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