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Recent Advances in Neural Recording Microsystems
Electrical and Computer Engineering Department, Université Laval, 1065 avenue de la Médecine, Québec (Québec) G1V 0A6, Canada
Received: 3 March 2011; in revised form: 3 April 2011 / Accepted: 25 April 2011 / Published: 27 April 2011
Abstract: The accelerating pace of research in neuroscience has created a considerable demand for neural interfacing microsystems capable of monitoring the activity of large groups of neurons. These emerging tools have revealed a tremendous potential for the advancement of knowledge in brain research and for the development of useful clinical applications. They can extract the relevant control signals directly from the brain enabling individuals with severe disabilities to communicate their intentions to other devices, like computers or various prostheses. Such microsystems are self-contained devices composed of a neural probe attached with an integrated circuit for extracting neural signals from multiple channels, and transferring the data outside the body. The greatest challenge facing development of such emerging devices into viable clinical systems involves addressing their small form factor and low-power consumption constraints, while providing superior resolution. In this paper, we survey the recent progress in the design and the implementation of multi-channel neural recording Microsystems, with particular emphasis on the design of recording and telemetry electronics. An overview of the numerous neural signal modalities is given and the existing microsystem topologies are covered. We present energy-efficient sensory circuits to retrieve weak signals from neural probes and we compare them. We cover data management and smart power scheduling approaches, and we review advances in low-power telemetry. Finally, we conclude by summarizing the remaining challenges and by highlighting the emerging trends in the field.
Keywords: implantable microsystems; neural recording; brain-computer interfaces; sensory circuits; data management; power scheduling; low-power biotelemetry; multi-channel; inductive link; ultrawide-band
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MDPI and ACS Style
Gosselin, B. Recent Advances in Neural Recording Microsystems. Sensors 2011, 11, 4572-4597.
Gosselin B. Recent Advances in Neural Recording Microsystems. Sensors. 2011; 11(5):4572-4597.
Gosselin, Benoit. 2011. "Recent Advances in Neural Recording Microsystems." Sensors 11, no. 5: 4572-4597.