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A Multitransducer Microsystem for Insect Monitoring and Control

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3 Author(s)
D. F. Lemmerhirt ; Center for Wireless Integrated MicroSystems, Michigan Univ., Ann Arbor, MI ; E. M. Staudacher ; K. D. Wise

This paper reports the development and in-vivo testing of a compact multitransducer microsystem intended for neuroethology experiments, including studies of gait dynamics in free-running insects. The system incorporates a combination of custom and off-the-shelf components. Its suite of measurement devices comprises leg-mounted strain gauges, electromyogram (EMG) and extracellular electrodes for the central nervous system, and a two-axis accelerometer. For signal conditioning and selection, the microsystem implements off-the-shelf electronics in a custom chip-on-board configuration. The microsystem measures 16 mmtimes19 mm, supports 40 components and 56 I/O leads, and is assembled on a four-layer printed-circuit board. The entire system occupies only 0.65 cm3 and weighs less than 5 g. It has been successfully used to monitor leg-strain and EMG signals on walking cockroaches and for stimulation in the insect central nervous and muscular systems

Published in:

IEEE Transactions on Biomedical Engineering  (Volume:53 ,  Issue: 10 )