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| http://dx.doi.org/10.1093/conphys/cox046 | DOI Listing |
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Estimating Wingbeat Frequency of Hummingbirds using a No-labeling Learning Computer Vision Approach.
Integr Comp Biol
January 2025
Centro de investigación Colibrí Gorriazul, Cundinamarca, Colombia.
Wingbeat frequency estimation is an important aspect for the study of avian flight, energetics, and behavioral patterns, among others. Hummingbirds, in particular, are ideal subjects to test a method for this estimation due to their fast wing motions and unique aerodynamics, which results from their ecological diversification, adaptation to high-altitude environments, and sexually selected displays. Traditionally, wingbeat frequency measurements have been done via "manual" image/sound processing.
View Article and Find Full Text PDFCannabinoid type-1 receptors in CaMKII neurons drive impulsivity in pathological eating behavior.
Mol Metab
January 2025
Leibniz Institute for Resilience Research, 55122, Mainz, Germany; Institute of Physiological Chemistry, University Medical Center of the Johannes Gutenberg University, 55128, Mainz, Germany. Electronic address:
Objectives: Overconsumption of palatable food and energy accumulation are evolutionary mechanisms of survival when food is scarce. These innate mechanisms becom detrimental in obesogenic environment promoting obesity and related comorbidities, including mood disorders. This study aims at elucidating the role of the endocannabinoid system in energy accumulation and hedonic feeding.
View Article and Find Full Text PDFEffects of Substitution of Wheat Straw by Giant Reed on Growth Performance, Serum Biochemical Parameters, Nutrient Digestibility, and Antioxidant Properties of Sheep.
Animals (Basel)
December 2024
State Engineering Technology Institute for Karst Desertfication Control, School of Karst Science, Guizhou Normal University, Guiyang 550025, China.
The development and utilization of unconventional forage resources is crucial to alleviating the current situation of shortage of forage resources. Giant reed () is a promising forage resource from the Poaceae family, one of the largest herbaceous plants globally, with fast growth, high biomass yield, and strong ecological adaptability. However, there are still very few reports on the use of giant reed in livestock and poultry production.
View Article and Find Full Text PDFQuantitative comparison of a mobile, tablet-based eye-tracker and two stationary, video-based eye-trackers.
Behav Res Methods
January 2025
Department Neurophysics, Philipps-Universität Marburg, Fachbereich Physik, AG Neurophysik, Karl-Von-Frisch-Straße 8a, 35043, Marburg, Lahnberge, Germany.
The analysis of eye movements is a noninvasive, reliable and fast method to detect and quantify brain (dys)function. Here, we investigated the performance of two novel eye-trackers-the Thomas Oculus Motus-research mobile (TOM-rm) and the TOM-research stationary (TOM-rs)-and compared them with the performance of a well-established video-based eye-tracker, i.e.
View Article and Find Full Text PDFLocal rainfall is more likely than distant thunderstorms to affect movement behaviour in Northern Kenyan elephants.
PLoS One
December 2024
Department of Biology, University of Oxford, Oxford, United Kingdom.
Previous research indicates that African savanna elephants change their movements preceding or coincident with local rainfall and it has been suggested that they respond to thunder in remote storms-perhaps reading seismic cues. We therefore aimed to test if elephants in Northern Kenya adhere to distinct daytime movement states between the wet and dry periods, and whether their abrupt movement changes precede local wet periods in response to lightning strikes from a specific compass heading. In our study site, lightning to the North and East often preceded local rainfall and could possibly be used to anticipate local wet periods, but local rainfall appears a more likely trigger of behavioural change.
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