signals
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Biology
Scientists uncover insights into neuron function by measuring two key signals simultaneously in living animals
When triggered by odor, C. elegans olfactory neurons undergo rapid changes in membrane potential and intracellular calcium ion levels, leading to fluctuations in the fluorescence intensity of membrane potential sensors and calcium ion sensors. Researchers at Kyushu University measured these changes simultaneously using high-speed capture under a microscope and subsequent image processing, showing that the two signals encode different information…
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Physics
Investigating the impact of ultralight dark matter on gravitational wave signals
Inspiring extreme mass ratio binaries in a dark matter environment. The movement of a small black hole creates a dense wake, which slows it down and affects the gravitational wave signal. Credit: Beatriz Oliveira and Rodrigo Vicente. A recent study published in Physical Review Letters investigated the effects of ultralight dark matter on extreme mass specific intake (EMRI), which could…
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Nanotechnology
Control of sound waves through Klein tunnels improves filtering of acoustic signals
Artistic representation of Klein tunnels in phononic crystals. The snowflake pattern represents an etched aluminum nitride membrane that guides sound waves, and the probe symbolizes TMIM technology, which visualizes the movement of waves. Red and blue Dirac cones highlight the transmission of waves through energy barriers without loss. Credit: Yue Jiang In the context of sensory modalities, the eyes function…
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Biology
Gibbon dance provides a model for investigating the use of gestural signals in primates
A northern white gibbon at Mulhouse Zoo (left) and a female northern gibbon and children at Amsterdam Zoo (right). Credit: Miriam Lindenmayer (left). HHU/Kai R. Kasper (right) Female crested gibbons move in jerky, almost geometric patterns. Researchers from Heinrich Heine University (HHU) in Düsseldorf, Oslo, Norway, and Paris studied this remarkable movement, which is comparable to human dance. In Primates,…
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