Key result
Miniature telemetry system simultaneously records cardiovascular neural signals, EEG, and ECG in unrestrained cats.
Why the study?
A multichannel telemetry system capable of simultaneously recording multiple cardiovascular neural signals in chronically instrumented unrestrained animals was needed.
A newly developed miniature multichannel telemetry system allows for the simultaneous recording of cardiovascular neural signals and ECG in unrestrained cats.
May enable simultaneous neural-ECG monitoring in unrestrained animals; leaves open translation to human cardiovascular research.
A multichannel telemetry system was developed for use with chronically instrumented unrestrained cats. This system can simultaneously record efferent and afferent cardiovascular neural signals, bioelectrical noise arising near the electrode recording the neural signals, EEG, ECG, and a standard calibration signal. The miniature (18 cm3), lightweight (24 g), telemeter is a five-channel, time-multiplexed, pulse width modulation (PWM)/FM device employing a high frequency subcarrier (60 kHz) and two sampling frequencies (30 kHz and 6 kHz). The device is powered by two small 120 mA . h silver oxide cells; it has an indoor transmission range of 10 m and can operate for 48 h. One channel transmits a standard signal (a square wave of 100 Hz and 200 mVp-p) used to monitor and regulate the system's performance. When the variation in either the amplitude or frequency of the standard signal is greater than 10% of the control value, the transmitted bioelectrical signals are automatically discarded.
No takes yet. Share an insight, caveat, or question.
Yonezawa et al. (1979) studied this question. Multichannel telemetry system was evaluated on System performance (recording cardiovascular neural signals, EEG, ECG). A miniature, lightweight multichannel telemetry system was developed to simultaneously record cardiovascular neural signals, EEG, and ECG in unrestrained cats.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: