{"id":534,"date":"2023-11-03T13:28:15","date_gmt":"2023-11-03T13:28:15","guid":{"rendered":"http:\/\/attentiv.fr\/attentivwp\/?page_id=534"},"modified":"2024-01-09T13:13:02","modified_gmt":"2024-01-09T13:13:02","slug":"loreille","status":"publish","type":"page","link":"https:\/\/attentiv.fr\/attentivwp\/loreille\/","title":{"rendered":"L’oreille"},"content":{"rendered":"

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L’oreille<\/h1>\n

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L’oreille<\/h1>\n

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La structure de l’oreille<\/h2>\n

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La partie externe de l\u2019oreille comprend la partie visible, le pavillon, ainsi que le conduit auditif. Le son est naturellement amplifi\u00e9 par le pavillon avant de p\u00e9n\u00e9trer par le conduit auditif jusqu\u2019au tympan.<\/span><\/p>\n

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L\u2019oreille moyenne se compose d\u2019une cavit\u00e9 a\u00e9rienne s\u00e9par\u00e9e de l\u2019oreille externe par le tympan. Cette caisse du tympan abrite les trois plus petits os du corps humain : le marteau, l\u2019enclume et l\u2019\u00e9trier. Ces minuscules osselets assurent la liaison entre le tympan et l\u2019oreille interne, transformant le son en \u00e9nergie m\u00e9canique.<\/span><\/p>\n<\/p>\n

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Dans l\u2019oreille interne, les vibrations activent le fluide de la cochl\u00e9e et mettent en mouvement les cellules cili\u00e9es qu\u2019elle contient. Ces cellules transforment les vibrations en influx nerveux. Cet influx est transmis au cerveau via le nerf auditif, ou il va \u00eatre interpr\u00e9t\u00e9 pour devenir un son intelligible. L\u2019oreille interne comprend \u00e9galement un deuxi\u00e8me organe sensoriel, le vestibule qui contr\u00f4le l\u2019\u00e9quilibre.<\/span><\/p>\n<\/div>\n<\/div>\n<\/div>\n

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Les sons qui nous entourent<\/h2>\n

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Le son na\u00eet d’une vibration des couches d’air, capt\u00e9e par notre tympan. Cette vibration est ensuite amplifi\u00e9e par les osselets de l’oreille moyenne, puis transmise vers l’oreille interne. Les cellules neurosensorielles de cette derni\u00e8re transforment cette vibration en impulsions \u00e9lectriques, envoyant ainsi l’information au cerveau qui en effectue l’interpr\u00e9tation.<\/p>\n

Les sons foisonnent autour de nous. Certains sont d\u00e9licats et agr\u00e9ables, tels que le murmure d’un ruisseau, le chant des oiseaux ou le doux son d’une guitare de jazz. D’autres se manifestent avec puissance, moins plaisants \u00e0 l’oreille : le hurlement d’une sir\u00e8ne d’incendie ou le vrombissement d’une perceuse.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Le son na\u00eet d’une vibration des couches d’air, capt\u00e9e par notre tympan. Cette vibration est ensuite amplifi\u00e9e par les osselets de l’oreille moyenne, puis transmise vers l’oreille interne. Les cellules neurosensorielles de cette derni\u00e8re transforment cette vibration en impulsions \u00e9lectriques, envoyant ainsi l’information au cerveau qui en effectue l’interpr\u00e9tation.<\/p>\n

Les sons foisonnent autour de nous. Certains sont d\u00e9licats et agr\u00e9ables, tels que le murmure d’un ruisseau, le chant des oiseaux ou le doux son d’une guitare de jazz. D’autres se manifestent avec puissance, moins plaisants \u00e0 l’oreille : le hurlement d’une sir\u00e8ne d’incendie ou le vrombissement d’une perceuse.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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Le son na\u00eet d’une vibration des couches d’air, capt\u00e9e par notre tympan. Cette vibration est ensuite amplifi\u00e9e par les osselets de l’oreille moyenne, puis transmise vers l’oreille interne. Les cellules neurosensorielles de cette derni\u00e8re transforment cette vibration en impulsions \u00e9lectriques, envoyant ainsi l’information au cerveau qui en effectue l’interpr\u00e9tation.<\/p>\n

Les sons foisonnent autour de nous. Certains sont d\u00e9licats et agr\u00e9ables, tels que le murmure d’un ruisseau, le chant des oiseaux ou le doux son d’une guitare de jazz. D’autres se manifestent avec puissance, moins plaisants \u00e0 l’oreille : le hurlement d’une sir\u00e8ne d’incendie ou le vrombissement d’une perceuse.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n

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