Table of Contents
Sensors, Volume 19, Issue 12 (June-2 2019) – 189 articles
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Cover Story (view full-size image) High-resolution (HR) mapping of the gastrointestinal (GI) bioelectrical activity is an emerging [...] Read more. High-resolution (HR) mapping of the gastrointestinal (GI) bioelectrical activity is an emerging method to define GI dysrhythmias such as gastroparesis and functional dyspepsia. Currently, there is no solution available to conduct HR mapping in long-term studies. In this regard, we have developed an implantable 64-channel closed-loop near-field communication system for real-time monitoring of gastric electrical activity. The system is composed of implantable (IU), wearable (WU), and stationary (SU) units. Simultaneous 125 kb/s IU-WU data telemetry and WU-IU adjustable power transfer is carried out through a 13.56 MHz RFID link. The retrieved data at the WU are then either transmitted to the SU for real-time monitoring through a 2.4 GHz RF transceiver or stored locally on a micro-SD memory card. The signals recorded at IU and received by SU are verified by a graphical user interface. View this paper.