🐈 家貓發聲機制的生物力學研究

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這份研究報告探討了家貓淨鳴（purring）的生理機制，挑戰了過往認為該聲音僅由神經驅動肌肉主動收縮產生的傳統觀點。研究團隊透過離體喉部實驗發現，即便在沒有神經訊號或肌肉收縮的情況下，貓的喉部仍能藉由自發性聲帶振盪產生低頻淨鳴聲。這種現象符合多數哺乳動物發聲採用的肌彈性—空氣動力（MEAD）原理，並由聲帶內特殊的結締組織墊（pads）提供輔助。解剖結構顯示，這些組織墊增加了聲帶質量，使其能在極低壓力下維持每秒約 25 至 30 次的低頻振動。這項發現顯示，貓的淨鳴機制可能比預期更複雜，是由被動聲學構造與神經控制共同作用的結果。研究結果證實，家貓的喉部構造已演化出能輕易切換於喵喵叫與淨鳴等不同頻率範圍的生物力學特性。 -- Hosting provided by SoundOn

Episode metadata supplied by the publisher feed · Published Aug 7, 2026

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🐈 家貓發聲機制的生物力學研究

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