Acquisition of muscle activity with a fully implantable multi-channel measurement system

Start Page
996
End Page
999
Article Number
6229409
Citation
2012 IEEE I2MTC - International Instrumentation and Measurement Technology Conference, Proceedings
Contribution to Conference
IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2012  
Publisher DOI
10.1109/I2MTC.2012.6229409
Scopus ID
2-s2.0-84864207319
Publisher
IEEE
ISBN
978-1-4577-1771-0
978-1-4577-1772-7
978-1-4577-1773-4
This work presents intramuscular measurements of the electromyogram (EMG) during goal directed arm movements. Thin film electrode arrays were epimysially implanted on the deltoideus of a rhesus macaque and the encapsulation process was monitored by impedance measurements. Increase of impedance plateaued after four weeks indicating a complete incorporation of electrodes. EMG recorded with these electrodes yielded a signal to noise ratio of about 80 dB at 200 Hz. The EMG recorded during goal directed arm movements showed high similarity amongst movements in the same direction while presenting clear differences between different movement directions. A second implantation of the whole measurement system for nine weeks proved good handling and biotolerance.
Subjects
arm movement
electrode encapsulation
impedance
implanted electrode
intra muscular EMG
DDC Class
621.3: Electrical Engineering, Electronic Engineering