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Fig. 11 | Animal Biotelemetry

Fig. 11

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

Fig. 11

Signal quality across time and location. Signal quality (delta spectral power during SWS divided by that during REM) presented on a log scale over time and location (overall and by version). The horizontal grey line signifies the threshold necessary to quantitatively distinguish between SWS and REM (at least a twofold difference). A Signal quality over time in days for all versions, showing a slight decrease in signal quality. Each grey dot represents a paired sleep cycle (where SWS and REM occurred). Black dots represent outliers. B Signal quality over time in days across subsequent versions of the instrument (V1, V2, V3), showing more consistent signal quality for V3. C Signal quality over location for all animals, showing overall lower signal quality in water than on land. D Signal quality over location across each version, showing improved resistance to water intrusion and resulting signal quality decrease

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Animal Biotelemetry

ISSN: 2050-3385