GUARDIAN | Environment
Ultrasound repellers could keep hedgehogs off roads, scientists hope
超声波驱赶器有望让刺猬远离道路，科学家们期盼如此
Electrodes detected that the hedgehog’s brainstem fired when signals were played across a range of 4 to 85kHz, demonstrating they can hear very high frequencies in the ultrasound range.
2026-03-11 389词 简单
Researchers at the University of Oxford collaborated with colleagues in Denmark to test the auditory brainstem response of 20 hedgehogs rehabilitated in Danish wildlife rescue centres. Small electrodes placed on the animals recorded electrical signals travelling between the inner ear and the brain, while short bursts of sounds were played through a loudspeaker.
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