Data for: Brain activity of diving seals reveals short sleep cycles at depth ...
Sleep is a crucial part of the daily activity patterns of mammals. However, in marine species that spend months or entire lifetimes at sea, the location, timing, and duration of sleep may be constrained. To understand how marine mammals satisfy their daily sleep requirements while at sea, we monitor...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Dataset |
| Language: | English |
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Dryad
2023
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.7291/d1zt2b https://datadryad.org/stash/dataset/doi:10.7291/D1ZT2B |
| Summary: | Sleep is a crucial part of the daily activity patterns of mammals. However, in marine species that spend months or entire lifetimes at sea, the location, timing, and duration of sleep may be constrained. To understand how marine mammals satisfy their daily sleep requirements while at sea, we monitored electroencephalographic (EEG) activity in wild northern elephant seals (Mirounga angustirostris) diving in Monterey Bay, California, USA. In this study, we characterized the sleep patterns of northern elephant seals from land to sea. Periods of electrophysiological sleep (slow wave sleep and rapid-eye-movement sleep) were recorded in seals on land, floating in shallow water, on the ocean floor in shallow water and the continental shelf, and during open ocean drift dives. While there was considerable variation in sleep patterns across individuals, total sleep time was lowest while sleeping at sea (<2 h/day) and highest while sleeping on land (~10 h/day). We linked sleep patterns to accelerometry and the ... : See the associated code repository and manuscript (links in the Related Works section) for additional information on the methods for data collection and processing. ... |
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