Name: 聽覺背後——神秘而奇妙嘅科學
Uploaded: 2020-03-13T14:57:05Z
Duration: 15 min 32 s
Description: 你有無諗過，你嘅耳仔係點樣運作嘅？係呢場引人入勝又令人著迷嘅演講，生物物理學家 Jim Hudspeth 向你展示咗毛細胞嘅運作，簡單得嚟好驚人，佢清楚咁講出造成聽覺微小動力嘅來源，同時解釋咗喺非常安靜嘅環境，你嘅耳仔如何釋放啲、獨一無二嘅聲波頻譜。

你有無諗過，你嘅耳仔係點樣運作嘅？係呢場引人入勝又令人著迷嘅演講，生物物理學家 Jim Hudspeth 向你展示咗毛細胞嘅運作，簡單得嚟好驚人，佢清楚咁講出造成聽覺微小動力嘅來源，同時解釋咗喺非常安靜嘅環境，你嘅耳仔如何釋放啲、獨一無二嘅聲波頻譜。

Hearing relies on tiny hair cells in the ear that can detect air pressure changes smaller than a billionth of atmospheric pressure. These hair cells not only convert vibrations into electrical signals for the brain but also actively amplify and fine-tune sounds, letting people distinguish subtle differences in pitch and tolerate an immense range of volumes. Remarkably, in silence, most ears actually emit their own unique tones. Understanding and potentially restoring these cells could transform treatments for hearing loss.

Your Ears Amplify And Emit Sound With Microscopic Precision

Learn more about TED@NAS

聽覺背後——神秘而奇妙嘅科學

science