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Fig. 6 | Animal Biotelemetry

Fig. 6

From: Eavesdropping on the brain at sea: development of a surface-mounted system to detect weak electrophysiological signals from wild animals

Fig. 6

Electrode configurations for signal maximization. A Electrode configuration for stationary and free-moving recordings showing positions of ground, electrooculogram (EOG), electroencephalogram (EEG), electromyogram (EMG), and electrocardiogram (ECG) electrodes. B, C EEG traces during SWS in Seal #4 demonstrate higher peak-to-peak amplitude of slow waves using the referential montage than recorded simultaneously with a differential montage (green line) (189 µV v. 73 µV). D, E Heart signals derived from the symmetrical anterior placement of both ECG leads (Seal #14) are more than twice as large as heart signals derived from contralateral placement (dark blue line) of ECG leads (Seal #12)

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Animal Biotelemetry

ISSN: 2050-3385