Ukudalwa nokuhamba komsindo kuyisiqalo sendlela yokuzwa. Umsindo uhambela endlebeni bese ufika ebuchosheni bese i-cortex ye-cerebral (ebuchosheni) ukuhumusha umsindo.
Ngaphambi kokuba sizwe noma yini, umsindo kufanele wenziwe. Kungakhathaliseki ukuthi umsindo uyisindo somuntu, i-siren, noma i-thunderclap, kudalwa ukudlidliza. Lezi zidakamizwa zingahamba emoyeni, ensimbi, emanzini, enkuni, njll.
Lo mqondo usebenza ngendlela efanayo nezintambo zomculo zomuntu ezidlidlizayo ukuze zenze imisindo esisebenzisayo ukudala inkulumo. Izidakamizwa zikhona efomini lesivunguvungu ekugcineni lenza kube ezindlebeni zethu. I-wave engadalwa ibalulekile ukuthi sizobona kanjani umsindo.
Umsebenzi wangaphandle ne-MIddle Ear
Indlebe yangaphandle isebenza njengomngcwabo wemisindo. Umsindo uhamba ngaphakathi kwendlebe kuya emlonyeni we- tympanic (eardrum). Amagagasi omsindo ahlangana nobuningi be-tympanic aguqulwa abe yi-vibrations ezwakala yiqembu lamathambo amancane, eyaziwa njenge- ossicles endlebe . Ziqukethe i-malleus (i-hammer), i-incus (anvil), ne-stapes (isishuphu). I-malleus iyona yokuqala yokuqhuba ukudlidliza, okuyinto eqhubekayo ngokusebenzisa i-incus bese iphela kuma-stapes, ehlangene newindi le-oval (vestibular), elihlukanisa indlebe ephakathi kusukela endlebeni yangaphakathi.
Umsebenzi Wendlebe Ephakathi
Umsebenzi wendlebe yangaphakathi iqala lapho ukuqhutshwa kwegagasi lomsindo kufinyelela efasiteleni lesigodi.
Umswakama ozwakalayo uhambela i-cochlea, ebonakala njengegobolondo lomkhumbi. I-cochlea ihlukaniswe ngamakamelo amathathu agcwele amanzi. Amakamelo ahlukene alamukela emafrijini ahlukene. Isignali isingena emgodini we-cochlear obangela ukudlidliza kwe-endolymph (i-fluid ekhethekile) lapho isignali iguqulwa ibe yindlela yokugesi eyadluliselwa emigulwini ye-cochlear ne-vestibular.
I-cochlea iphela efasiteleni elizungezile, lapho umswakama ozwakalayo usuhlakazeka khona njengokucindezela kwamanzi.
I-Brain
Indlela yokuzwa empeleni iqukethe amayunithi amabili okusebenza: indlebe efanele nendlebe yesokunxele. Amayunithi afana; Nokho, yilowo nalowo unendima ebalulekile ekunqumeni umsindo. I-medulla oblongata (ingxenye engezansi ye-brainstem) ithola izibonakaliso ezivela kwi-vestibulocochlear nerve ngezikhathi ezahlukene nezikhathi ezinamandla kuye ngokuthi ngabe umsindo uvelaphi, indlela ikhanda eliphendukile ngayo, kanye nebanga lomsindo. Umehluko ngesikhathi nokuqina kubalulekile ekuhlinzekeni isici sesithathu-ntathu ukuzwakala.
I-brainstem ithumela isibonakaliso ku-middlebrain bese ilandela i-cortex yokuhlola ye-lobes yesikhashana yengqondo lapho izimpendulo zikagesi zihunyushwa njengemisindo esiyithola.
Imithombo:
Jarvis, C. (2004). Izinzwa. Ekuhlolisweni Kwezempilo Nezempilo (341-370). St. Louis, Missouri: Saunders.
Izikhungo zezempilo zikazwelonke. Ulwazi Ngokuzwa, Ukuxhumana, Nokuqonda.