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Fig. 10 | Animal Biotelemetry

Fig. 10

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

Fig. 10

A, C, D Topographic maps with spherical interpolation (EEGLAB) show each IC’s spatial weights based on the relative spatial orientation of sensors on the seal (EEG above cortex, EMG on neck, and ECG near pectoral flippers). Each diagram represents a single IC where red or dark blue (opposite polarity) represents strong spatial weights for each electrode location. IC1 and 2 are opposite polarity components of the heart signal from rear heart rate sensors, while EEG electrode locations above the brain generate IC5. B ICs over time, showing the ECG waveform in IC1 & 2 and slow-wave sleep in IC5

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Animal Biotelemetry

ISSN: 2050-3385