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Sam H. Ridgway
Researcher at Shelter Insurance
Publications - 196
Citations - 6556
Sam H. Ridgway is an academic researcher from Shelter Insurance. The author has contributed to research in topics: Bottlenose dolphin & Human echolocation. The author has an hindex of 47, co-authored 196 publications receiving 6123 citations. Previous affiliations of Sam H. Ridgway include University of California, Santa Cruz & University of California, San Diego.
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Journal ArticleDOI
Cetacean sleep: an unusual form of mammalian sleep.
TL;DR: The suggestion is made that the selection pressure necessitating the evolution of cetacean sleep was most likely the need to offset heat loss to the water from birth and throughout life.
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Respiration and deep diving in the bottlenose porpoise
TL;DR: A bottlenose porpoise was trained to dive untethered in the open ocean and to exhale into an underwater collecting funnel before surfacing from prescribed depths down to 300 meters.
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Temporary shift in masked hearing thresholds in odontocetes after exposure to single underwater impulses from a seismic watergun
TL;DR: A behavioral response paradigm was used to measure masked underwater hearing thresholds in a bottlenose dolphin and a white whale before and after exposure to single underwater impulsive sounds produced from a seismic watergun to determine if a temporary shift in masked hearing thresholds occurred.
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Dolphin lung collapse and intramuscular circulation during free diving: evidence from nitrogen washout
Sam H. Ridgway,Red Howard +1 more
TL;DR: The bottle-nosed dolphin is not protected by lung collapse from the decompression hazards of dives to depths shallower than 70 meters, so intramuscular nitrogen tensions after a schedule of repetitive ocean dives suggest.
Journal ArticleDOI
Temporary shift in masked hearing thresholds of bottlenose dolphins, Tursiops truncatus, and white whales, Delphinapterus leucas, after exposure to intense tones
TL;DR: The data confirm that cetaceans are susceptible to temporary threshold shifts (TTS) and that small levels of TTS may be fully recovered.