This week's paper debunks the popular myth that woodpeckers protect their brains from concussions using built-in damping mechanisms.

Through high-speed video analysis and biomechanical modeling, the authors reveal that woodpeckers' heads function as rigid hammers rather than shock absorbers.

The reason woodpeckers avoid concussions lies in scaling laws: their small brain size significantly reduces internal stress for a given deceleration, while the short duration of impact further limits injury risk. These evolutionary adaptations allow them to withstand extreme decelerations - up to 400g - without harm.
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修改:vinbo FROM 114.86.85.*
FROM 114.86.85.*