eprintid: 10087638 rev_number: 20 eprint_status: archive userid: 608 dir: disk0/10/08/76/38 datestamp: 2019-12-10 12:42:03 lastmod: 2021-09-27 22:25:23 status_changed: 2019-12-10 12:42:03 type: proceedings_section metadata_visibility: show creators_name: Jager, KD creators_name: Mentink, M creators_name: Lancashire, H creators_name: Al-Ajam, Y creators_name: Taylor, S creators_name: Vanhoestenberghe, A title: Characterisation of a multi-channel multiplexed EMG recording system: towards realising variable electrode configurations ispublished: pub divisions: UCL divisions: B02 divisions: C10 divisions: D16 divisions: G86 divisions: B04 divisions: C05 divisions: F42 keywords: Biopotential recordings, electromyography, electrode array, bipolar, tripolar, monopolar, implantable electronics. note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. abstract: An implantable EMG amplifier with a novel multiplexed frontend for in vivo selection of optimal electrode configurations, was designed using commercially available components. The multiplexers are advantageous as optimal electrode configuration are not known before implantation. The system has 6 ADC recording channels (ADS1298 biopotential amplifier, 2 kHz sampling frequency, 16-bit resolution), and three 8 × 8 multiplexer arrays (ADG2188), 2 channels per MUX. The system was characterised by measuring input impedance (5.8 MOhm) and frequency response (CMRR 49.0 dB; SNR 51.4 dB). EMG recordings from implanted epimysial electrodes showed lower signal quality (13.5 dB) compared with a commercial EMG recorder (19.5 dB), nonetheless the signals appeared suitable for myoelectric control applications. An implantable version of the EMG recorder, housed within a hermetically sealed ceramic package, should improve signal quality. date: 2019-12-05 date_type: published publisher: IEEE official_url: https://doi.org/10.1109/biocas.2019.8918710 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green verified: verified_manual elements_id: 1729022 doi: 10.1109/biocas.2019.8918710 lyricists_name: De Jager, Kylie lyricists_name: Lancashire, Henry lyricists_name: Taylor, Stephen lyricists_name: Vanhoestenberghe, Anne lyricists_id: KDEJA16 lyricists_id: HTLAN52 lyricists_id: SJGTA66 lyricists_id: AVANH36 actors_name: De Jager, Kylie actors_id: KDEJA16 actors_role: owner full_text_status: public publication: 2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) place_of_pub: Nara, Japan event_title: 2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) event_dates: 17 October 2019 - 19 October 2019 institution: 2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) book_title: 2019 IEEE Biomedical Circuits and Systems Conference (BioCAS) citation: Jager, KD; Mentink, M; Lancashire, H; Al-Ajam, Y; Taylor, S; Vanhoestenberghe, A; (2019) Characterisation of a multi-channel multiplexed EMG recording system: towards realising variable electrode configurations. In: 2019 IEEE Biomedical Circuits and Systems Conference (BioCAS). IEEE: Nara, Japan. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10087638/1/biocas_mux_v2019-08-30d_submitted.pdf