A5048342847- Marine animal studies overview
- Sleep and Wakefulness Research
- Neuroscience of respiration and sleep
- Circadian rhythm and melatonin
- Primate Behavior and Ecology
- Neurobiology and Insect Physiology Research
- Photoreceptor and optogenetics research
- Hemispheric Asymmetry in Neuroscience
- Cephalopods and Marine Biology
- Advanced Chemical Sensor Technologies
- Zebrafish Biomedical Research Applications
- Underwater Vehicles and Communication Systems
- Bat Biology and Ecology Studies
- Water Quality Monitoring Technologies
- Memory and Neural Mechanisms
- Spaceflight effects on biology
- Noise Effects and Management
- Fatty Acid Research and Health
- Regulation of Appetite and Obesity
- Food Industry and Aquatic Biology
- Ergonomics and Musculoskeletal Disorders
- Animal Vocal Communication and Behavior
- Aerodynamics and Fluid Dynamics Research
- Animal Behavior and Welfare Studies
- Lubricants and Their Additives
University of California, Los Angeles
2013-2024
Severtsov Institute of Ecology and Evolution
2015-2024
International Center for Tropical Agriculture
2023
Vietnamese - German Center of Excellence in Medical Research
2021
VA Greater Los Angeles Healthcare System
2002-2020
VA West Los Angeles Medical Center
2004-2020
VA Sepulveda Ambulatory Care Center
2004-2020
Russian Academy of Sciences
1992
Sleep is a crucial part of the daily activity patterns mammals. However, in marine species that spend months or entire lifetimes at sea, location, timing, and duration sleep may be constrained. To understand how mammals satisfy their requirements while we monitored electroencephalographic wild northern elephant seals (Mirounga angustirostris) diving Monterey Bay, California. Brain-wave showed took short (less than 20 minutes) naps (maximum depth 377 meters; 104 sleeping dives). Linking these...
The current study provides details of sleep (or inactivity) in two wild, free-roaming African elephant matriarchs studied their natural habitat with remote monitoring using an actiwatch subcutaneously implanted the trunk, a standard collar equipped GPS system and gyroscope, portable weather station. We found that these elephants were polyphasic sleepers, had average daily total time 2 h, mostly between 02:00 06:00, displayed shortest any mammal recorded to date. Moreover, exhibited both...
Unihemispheric slow wave sleep (USWS) is a unique form of in which one brain hemisphere maintains low voltage electrical activity indicative waking while the opposite exhibits sleep. USWS present several marine mammals and some species birds. One proposed biological function to enable animal monitor environment detect predators or conspecifics. While asymmetrical eye state was often observed during behavioral birds mammals, electrophysiological (electroencephalogram, EEG) correlates between...
Our understanding of the role neurotransmitters in control electroencephalogram (EEG) has been entirely based on studies animals with bilateral sleep. The study unihemispheric sleep presents opportunity separating neurochemical substrates waking and EEG from systemic, correlates states.
Summary The fur seal ( Callorhinus ursinus ), a member of the Pinniped family, displays highly expressed electroencephalogram (EEG) asymmetry during slow wave sleep (SWS), which is comparable with unihemispheric in cetaceans. In this study, we investigated EEG using spectral analysis. Four young (2–3 years old) seals were implanted electrodes for polygraphic recording. each animal, power frequency range 1.2–16 Hz was computed symmetrical cortical recordings over two consecutive nights....
Fur seals are unique in that they display both bilateral slow-wave sleep (BSWS), as seen all terrestrial mammals, and with interhemispheric electroencephalogram (EEG) asymmetry, resembling the unihemispheric slow waves of cetaceans. Little is known about underlying mechanisms this phenomenon, which also termed asymmetrical wave (ASWS). However, we may begin to understand expression ASWS by studying neurotransmitter systems thought be involved generation maintenance sleep–wake states mammals....
Fur seals (pinnipeds of the family Otariidae) display two fundamentally different patterns sleep: bilaterally symmetrical slow-wave sleep (BSWS) as seen in terrestrial mammals and (SWS) with a striking interhemispheric EEG asymmetry (asymmetrical SWS or ASWS) observed cetaceans. We examined effect preventing fur from sleeping BSWS on their pattern sleep. Four northern ( Callorhinus ursinus ) kept land were deprived (SD) for 3 consecutive days, followed by 1 recovery day. was evaluated both...
The mouse-deer or chevrotains are the smallest of ungulates and ruminants. They characterized by a number traits which considered plesiomorphic for Artiodactyla order. objective this study was to examine sleep in lesser (Tragulus kanchil), is group (body mass < 2.2 kg). Electroencephalogram, nuchal electromyogram, electrooculogram, body acceleration were recorded four adult females using telemetry system Bu Gia Map National Park Vietnam. spent on average 49.7 ± 3.0% 24 h non-rapid eye...
Four young harp seals (aged three to five months) were implanted with electrodes for recording electrocorticograms (ECoG) of the two hemispheres, and electrocardiogram, electroculogram, electromyogram neck muscles. In all ECoG slow waves developed simultaneously in both irrespective whether they slept on land, water surface or submerged. Slow-wave sleep (SWS) was present animals submerged, while paradoxical (PS) occurred only when Breathing SWS could be regular (pauses less than twenty...