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fromNature
1 week ago

Daily briefing: How the brain locks in long-term memories

Astrocytes - brain cells once thought of as supporting players to neurons - have a principal role in stabilizing memories for long-term recall. In mice, researchers found that Fos, a gene associated with cell activity, was highly expressed in the astrocytes of mice that re-entered cages they'd been conditioned to associate with fear. The team also found that highly-active astrocytes produce more receptors that respond to the neurotransmitter noradrenaline, which allows them to communicate with neurons.
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fromBig Think
5 months ago

Aliens, everywhere: How scientists once imagined a cosmos teeming with life

The discovery of chemical traces on K2-18b sparks cautious excitement about extraterrestrial life, marking a shift in astrobiological perspectives.
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