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95 results for “BOUT++”
Data for: Regularly occurring bouts of retinal movements suggest an REM sleep–like state in jumping spiders
<p>Sleep and sleep-like states are present across the animal kingdom, with recent studies convincingly demonstrating sleep-like states in arthropods, nematodes, and even cnidarians. However, the existence of different sleep phases across taxa is as yet unclear. In particular, the study of rapid eye movement (REM) sleep is still largely centered on terrestrial vertebrates, particularly mammals and birds. The most salient indicator of REM sleep is the movement of eyes during this phase. Movable eyes, however, have evolved only in a limited number of lineages—an adaptation notably absent in insects and most terrestrial arthropods—restricting cross-species comparisons. Jumping spiders, however, possess movable retinal tubes to redirect gaze, and in newly emerged spiderlings, these movements can be directly observed through their temporarily translucent exoskeleton. Here, we report evidence for an REM sleep–like state in a terrestrial invertebrate: periodic bouts of retinal movements coupled with limb twitching and stereotyped leg curling behaviors during nocturnal resting in a jumping spider. Observed retinal movement bouts were consistent, including regular durations and intervals, with both increasing over the course of the night. That these characteristic REM sleep–like behaviors exist in a highly visual, long-diverged lineage further challenges our understanding of this sleep state. Comparisons across such long-diverged lineages likely hold important questions and answers about the visual brain as well as the origin, evolution, and function of REM sleep.</p>
Data from: Rock wrens preferentially use song types that improve long distance signal transmission during natural singing bouts
When animals are capable of producing variable signals they may preferentially use some signal types over others. Among songbirds, individuals are known to alter song type form and usage patterns in contest and mating situations, but studies have not examined how song choice improves signal efficacy during broadcast song. For this study we investigated rock wren Salpinctes obsoletus song type use rates during natural singing bouts. We tested three hypotheses for adaptive song use during broadcast song: 1) birds improve signal content by increasing the use of high quality songs, 2) birds optimize for signal propagation by preferentially using songs that transmit well, and 3) birds maintain energy by reducing the use of costly songs. The study included 19 058 songs sung by 12 individuals, each of which had a measured song repertoire of between 52 and 117 song types which were produced at highly variable rates. Results indicated that rock wrens did not preferentially sing song types with shorter durations or fewer frequency switches, as would be expected if they selected song types to minimize delivery costs. They also did not favor songs with more rapid trills or more frequency switches, as would be expected if they adjusted song use primarily to indicate quality. Focal birds did preferentially sing significantly longer songs with lower bandwidths, lower frequencies, and slower trill rates. Results suggest that natural broadcast singing patterns are shaped more by the benefits of long distance transmission than by the benefits of advertising performance ability or the costs of song production.
Bouts of rest and physical activity in C57BL/6J mice
<p>The objective was to exploit the raw data output from a scalable home cage (type IIL IVC) monitoring (HCM) system (DVC®), to characterize the pattern of undisrupted rest and physical activity (PA) of C57BL/6J mice. The system's tracking algorithm shows that mice in isolation spend 67% of the time in bouts of long rest (≥40s) and 59% of the time was interpreted as sleep. Twenty percent is physical activity (PA), split equally between local movements and locomotion. Decomposition revealed that a day contains ~6500 discrete bouts of short and long rest, and local and locomotor movements. Mice travel ~330m per day, mainly during the dark hours, while travelling speed is similar through the light-dark cycle. Locomotor bouts are usually <0.2m and <1% are >1m. Tracking also revealed fits of abnormal behaviour. The starting positions of the bouts showed no preference for the rear over the front of the cage floor, while there was a strong bias for the peripheral (75%) over the central floor area. The composition of bouts has a characteristic circadian pattern, however, intrusive husbandry routines increased bout fragmentation by ~40%.</p> <p>Extracting electrode activations density (EAD) from the raw data yielded results close to those obtained with the tracking algorithm, with 59% of the time in long rest (<1 EAD s-1) and 20% in PA. We confirm that EAD correlates closely with movement distance (rs>0.95) and the data agreed in ~96% of the file time. Thus, albeit EAD is less informative, it may serve as a proxy for PA and rest, enabling monitoring group-housed mice. The data show that a change in housing density from one to two, and up to three mice had the same effect size on EAD (~2) with no difference between sexes. The EAD deviated significantly from this stepwise increase with 4 mice per cage, suggesting a crowdedness stress inducing sex-specific adaptations.</p> <p>We conclude that informative metrics on rest and PA can be automatically extracted from the raw data flow in near-real time (< 1 hrs). These metrics relay useful longitudinal information to those who use or care for the animals.</p>
Circadian Rhythm and Attack-timing in Episodic Cluster Headache Patients in- and Outside of Bout: an Actigraphic Study
ClinicalTrials.gov study NCT02853487. IPD Sharing: UNDECIDED. Countries: 1. Publications: 1.
Selective Head-and-neck Cooling on Biomarker Levels and Symptom Rating Following a Boxing Bout
ClinicalTrials.gov study NCT06386484. IPD Sharing: Not stated. Countries: 1. Publications: 1.
MICI-CMV:Valganciclovir in Recurrent Bouts of Cryptogenic Inflammatory Bowel Diseases With an Infection by Cytomegalovirus
ClinicalTrials.gov study NCT00237653. IPD Sharing: Not stated. Countries: 1. Publications: 13.
The Effect of an Acute Bout of Exercise on High-sugar Meal Induced Endothelial Dysfunction
ClinicalTrials.gov study NCT02919488. IPD Sharing: Not stated. Countries: 1. Publications: 7.
Single Bout Exercise on Learning in PD
ClinicalTrials.gov study NCT04189887. IPD Sharing: NO. Countries: 1. Publications: 1.
Effect of an Acute Bout of Exercise on Smoking Satisfaction
ClinicalTrials.gov study NCT01417975. IPD Sharing: Not stated. Countries: 1. Publications: 4.
The Effect of an Acute Bout of Exercise on Serum Vitamin D Concentration
ClinicalTrials.gov study NCT05214027. IPD Sharing: NO. Countries: 1. Publications: 0.
The Effect of an Acute Bout of Exercise on Pain Sensitivity and Clinical Pain in Adults With Knee Osteoarthritis
ClinicalTrials.gov study NCT05605444. IPD Sharing: YES. Countries: 1. Publications: 1.
IL-6 Regulation of Energy Stores During Recovery From an Acute Exercise Bout
ClinicalTrials.gov study NCT05349149. IPD Sharing: NO. Countries: 1. Publications: 1.
Comparing of Long Bout and Short Bouts of Similar Volume of Walking in Obese on Weight Loss During a Weight Loss Program
ClinicalTrials.gov study NCT02387827. IPD Sharing: Not stated. Countries: 1. Publications: 1.
Effect of an Acute Bout of Exercise on Smoking Topography
ClinicalTrials.gov study NCT01431365. IPD Sharing: Not stated. Countries: 1. Publications: 5.
Short-bout Handgrip Exercise for Smoking Cessation
ClinicalTrials.gov study NCT02844296. IPD Sharing: UNDECIDED. Countries: 1. Publications: 21.
Effects of Breathing Mild Bouts of Low Oxygen on Limb Mobility After Spinal Injury
ClinicalTrials.gov study NCT02323945. IPD Sharing: Not stated. Countries: 1. Publications: 5.
Effects of a Single Bout of Resistance Training Session on Hormonal Response in Pre-pubertal and Pubertal Boys
ClinicalTrials.gov study NCT05022992. IPD Sharing: NO. Countries: 1. Publications: 1.
Vascular Effects of a Single Bout of Electronic Cigarette Use
ClinicalTrials.gov study NCT03209661. IPD Sharing: NO. Countries: 1. Publications: 1.
Short-bout Handgrip Exercise Intervention
ClinicalTrials.gov study NCT04059497. IPD Sharing: YES. Countries: 1. Publications: 1.
Effect of Acute Bout of Exercise on Levels of PAHSA
ClinicalTrials.gov study NCT05572905. IPD Sharing: NO. Countries: 1. Publications: 2.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.