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. Author manuscript; available in PMC: 2022 Mar 7.
Published in final edited form as: Biosens Bioelectron. 2021 Nov 16;197:113808. doi: 10.1016/j.bios.2021.113808

Fig. 1.

Fig. 1.

The prolonged ECG system for multiple adult zebrafish acquisition. (a) the prolonged ECG system design: the reservoir for containing Tricaine solution, the tube system for feeding the solution to the fish, the electrodes and support stand for acquiring ECG signals. (b) System-level block diagram showing analog front-end chip, signal transduction, wireless transmission from the ECG to user interface. (c) In-house electronic board having system-on-chip for wireless transmission, power management connecting to the electrode for ECG acquisition. Scale bar: 2 cm. (d) User interface of the mobile application receiving ECG data from multiple fish. (e) Representative ECG data collected by the system. (f) ECG data segments superimposed, and its average ECG segment in red with clear ECG waves (P wave, QRS complex and T wave).