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How an increased heart rate could induce anxiety in mice
Anxiety can make the heart beat faster, but could the reverse be true as well? That question has been much debated, but hard to test. Now, a team has shown that artificially increasing a mouse’s heart rate can induce anxiety-like behaviours, and identified an area in the brain that appears to be a key mediator of this response. They hope that this knowledge could help to improve therapies for treating anxiety-related conditions in the future.
Research article: Hsueh et al.
News & Views: How an anxious heart talks to the brain
08:32 Research Highlights
The chance discovery of the smallest rock seen so far in the Solar System, and the first brain recording from a freely swimming octopus.
Research Highlight: Asteroid photobombs JWST practice shots
Research Highlight: How to measure the brain of an octopus
In September 2022, NASA’s DART spacecraft smashed into a space rock known as Dimorphos, which orbits a near-Earth asteroid. The aim of the mission was to test whether asteroids could be redirected as a method to protect Earth against future impacts. This week, multiple papers have been published describing what researchers have learnt about the impact and its aftermath. Reporter Alex Witze joined us to round up the findings.
News: Asteroid lost 1 million kilograms after collision with DART spacecraft
Research article: Thomas et al.
Research article: Daly et al.
Research article: Li et al.
Research article: Cheng et al.
Research article: Graykowski et al.
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Transplanted human brain-tissue takes root in mice without a cortex
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