Zvisikwa uye kufamba kweruzhinji ndiko kutanga kwerudzi rwekunzwa. Inzwi rinosvika munzeve uye ipapo kuuropi inosvika uye cerebral cortex (muuropi) kududzira inzwi.
Tisati tanzwa chero chinhu, inzwi rinofanira kuve rakagadzirwa. Pasinei nokuti inzwi iri inzwi romunhu, sirin, kana kuti kutinhira, kudengenyeka kunogadzirwa. Izvi zvinogona kutenderera nemhepo, simbi, mvura, matanda, nezvimwewo.
Pfungwa iyi inoshanda nenzira imwecheteyo matambo ezwi omunhu anodonha kuti atange mheremhere yatinoshandisa pakuita kutaura. Izvo kudengenyeka kuripo mune fomu yemhepo inoguma iyo inozoita kuti iite munzeve dzedu. Mhepo yakasikwa inokosha kuti tichaona sei inzwi.
Kunze uye MIddle Ear Function
Nzeve yekunze inoshanda sechidzitiro chemashoko. Inzwi rinofamba mukati mezeve kusvika kune tympanic membrane (eardrum). Mafungu anonzwika anosangana nehupanic membrane anoshandurwa kuva kudengenyeka kunoonekwa neboka remapoka mashomanana, anozivikanwa sepakati chenzeve ossicles . Izvo zvinowanikwa nemarleus (nyundo), incus (anvil), uye stapes (stirrup). Mhuka iyi ndiyo inotanga kuenderera mberi, iyo inoenderera mberi kuburikidza ne-incus uye inoguma pa stapes, iyo inotarisana newindo revharo (vestibular), rinoparadzanisa nzeve yepakati kubva munzeve yomukati.
Basa reNzeve Yomukati
Basa rekunze kwemukati rinotanga apo kuitisa kwemazwi ekurira kunosvika pawindo revharo.
Izwi rinotinhira rinotenderera mberi nechochlea, iyo inoratidzika sehove yekono. Ikoki inoparadzaniswa kuva makamuri matatu akazara mvura. Makamuri akasiyana anogamuchira maitiro akasiyana-siyana. Chiratidzo chacho chinopinda mumugonho wechinyorwa unokonzera kudengenyeka kwe endolymph (a special fluid) apo chiratidzo chinoshandurwa kuva magetsi emagetsi anoendeswa kune mishonga inoputika uye yakazara.
Iyo chinyoro inopera pawindo rakakomberedza, apo rwiyo rwenzwi runopararira se hydraulic pressure.
The Brain
Kunzwa kunonyanya kunoumbwa nemaviri maviri anoshanda: nzeve yakarurama uye nzeve yekunze. Zviyero zvakafanana; zvisinei, mumwe nomumwe ane basa rinokosha mukutsunga kwezwi. Iyo medulla oblongata (chikamu chepamusoro che brain brain) inogamuchira zviratidzo kubva muropa re vestibulocochlear panguva dzakasiyana-siyana nekusimba kwesimba zvichienderana nokuti kunonzwa inzwi rinobva kupi, nenzira iyo musoro wakatendeuka, uye kureba kwezwi. Kusiyana kwenguva uye kusimba kwakakosha pakupa 3-dimensional chinhu kurira.
Icho chinokonzera hutano chinotumira chiratidzo kune midbrain uye zvichizozoenda kune cortex yekuongorora yetimes lobes yenguva yeropa apo mafungiro emagetsi anotsanangurwa semanzwiro atinoona.
Sources:
Jarvis, C. (2004). Ears. MuChechi yekuongorora uye Kuongorora Utano (341-370). St. Louis, Missouri: Saunders.
National Institutes of Health. Mashoko Nezvekunzwa, Kutaurirana, uye Kunzwisisa.