Tremor is a rhythmic, involuntary, oscillatory movement of a body part resulting from alternating or synchronous contractions of reciprocally innervated muscles, typically around a joint. Phenomenologically, tremors are characterized by their frequency, amplitude, distribution, and activation condition (rest, postural, kinetic, or intention). They arise from pathological or physiological alterations in central motor networks, particularly involving cerebello-thalamo-cortical and basal ganglia circuits, and can be modulated by peripheral feedback. Tremor is a core motor phenomenon in various neurological disorders, where its spatiotemporal features are crucial for differential characterization, quantification, and pathophysiological investigation.
A shallow 4.9-magitude earthquake struck eastern Indonesia overnight, damaging dozens of homes and injuring multiple people, an official said Thursday.
Environment
6 hours ago
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The extraction of gas and oil by fracking—large-scale fracturing of underground rocks by injecting water, sand and additives—is generating growing concern in Argentine Patagonia. Neuquén province—home to the country's largest ...
Earth Sciences
Feb 23, 2026
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An ongoing string of more than a dozen earthquakes in less than 90 minutes early Monday ended what had been some recent calm from recent weeks of shaking ground in the region, according to the U.S. Geological Survey.
Earth Sciences
Feb 2, 2026
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A strong earthquake shook western Japan on Tuesday, but no major damage or life-threatening injuries were reported.
Environment
Jan 6, 2026
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A swarm of at least a dozen earthquakes reaching up to magnitude 3.9 rattled San Ramon near San Francisco, the U.S. Geological Survey reports.
Earth Sciences
Dec 22, 2025
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A swarm of at least six earthquakes reaching up to magnitude 2.9 rattled San Ramon near San Francisco, the U.S. Geological Survey reports.
Earth Sciences
Dec 15, 2025
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Glacial earthquakes are a special type of earthquake generated in cold, icy regions. First discovered in the Northern Hemisphere more than 20 years ago, these quakes occur when huge chunks of ice fall from glaciers into the ...
Earth Sciences
Dec 14, 2025
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409
A 6.9 magnitude earthquake shook northeastern Japan and caused small tsunami waves but no apparent damage Friday, days after a stronger quake in the same region.
Environment
Dec 12, 2025
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Up to 30% of life, by weight, is underground. Seismic activity may renew the energy supply for subterranean ecosystems. Published in PNAS Nexus, Eric Boyd and colleagues chronicled the ecological changes in subsurface microbial ...
Earth Sciences
Nov 25, 2025
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533
Earthquake forecasting tools powered by AI can forecast the risk of aftershocks seconds after the initial tremor, a new study suggests. The machine learning models can forecast where, and how many, aftershocks will take place ...
Earth Sciences
Nov 24, 2025
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