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- W3080486302 abstract "Urban areas are inherently noisy, and this noise can disrupt biological processes as diverse as communication, migration, and reproduction. We investigated how exposure to urban noise affects sleep, a process critical to optimal biological functioning, in Australian magpies ( Cracticus tibicen ). Eight magpies experimentally exposed to noise in captivity for 24-h spent more time awake, and less time in non-rapid eye movement (non-REM) and REM sleep at night than under quiet conditions. Sleep was also fragmented, with more frequent interruptions by wakefulness, shorter sleep episode durations, and less intense non-REM sleep. REM sleep was particularly sensitive to urban noise. Following exposure to noise, magpies recovered lost sleep by engaging in more, and more intense, non-REM sleep. In contrast, REM sleep showed no rebound. This might indicate a long-term cost to REM sleep loss mediated by noise, or contest hypotheses regarding the functional value of this state. Overall, urban noise has extensive, disruptive impacts on sleep composition, architecture, and intensity in magpies. Future work should consider whether noise-induced sleep restriction and fragmentation have long-term consequences. • We investigated, for the first time, how exposure to urban noise affects sleep in wildlife. • During noise exposure, magpies experienced more fragmented sleep bouts, and less intense non-REM sleep. • REM sleep was particularly sensitive to urban noise. • Following exposure to noise, magpies recovered lost sleep by engaging in more, and more intense, non-REM sleep. • REM sleep showed no rebound, challenging assumptions about the essential value of this sleep state." @default.
- W3080486302 created "2020-09-01" @default.
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- W3080486302 date "2020-12-01" @default.
- W3080486302 modified "2023-10-18" @default.
- W3080486302 title "Urban noise restricts, fragments, and lightens sleep in Australian magpies" @default.
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- W3080486302 doi "https://doi.org/10.1016/j.envpol.2020.115484" @default.
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