![Dab tsi yog lub suab nrov nruab nrab? Dab tsi yog lub suab nrov nruab nrab?](https://i.answers-medical.com/preview/medical-health/14137158-what-is-pure-tone-average-j.webp)
Video: Dab tsi yog lub suab nrov nruab nrab?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A Pure Tone Nruab Nrab (PTA) hais txog qhov nruab nrab Cov theem ntawm kev hnov lus ntawm ib pawg ntawm cov zaus: feem ntau 500, 1000, 2000 thiab 4000 Hz. Yog tias koj qhov PTA yog <25 dB, koj lub rooj sib hais tag nrho yuav raug suav tias yog nyob rau hauv cov kev txwv ib txwm muaj.
Ua kom pom qhov no, qhov nruab nrab ntawm lub suab ntshiab yog dab tsi?
Ntshiab - suab nruab nrab . Ntshiab - suab nruab nrab (PTA) yog nruab nrab ntawm kev hnov lus hnov ntawm 500, 1000, thiab 2000. Qhov no nruab nrab yuav tsum kwv yees qhov kev txais tos hais lus (SRT), tsis pub dhau 5 dB, thiab kev hais kom pom qhov pib (SDT), tsis pub dhau 6-8 dB.
Qhov thib ob, dab tsi yog ib txwm audiogram? Audiograms yog teem tawm nrog zaus nyob rau hauv hertz (Hz) nyob rau hauv kab rov tav axis, feem ntau ntawm ib tug logarithmic scale, thiab ib tug linear dBHL nplai ntawm ntsug axis. Rau tib neeg, li qub kev hnov lus nyob nruab nrab ntawm −10 dB (HL) thiab 15 dB (HL), txawm hais tias 0 dB los ntawm 250 Hz txog 8 kHz yog suav tias yog ' nruab nrab ' li qub hnov.
Hauv qhov no, koj yuav pom lub suab nrov zoo li cas nruab nrab?
Hnov rhiab heev hauv kev hais lus ntau zaus yog hu ua dawb huv - suab nruab nrab (PTA) thiab tuaj yeem suav tau los ntawm kev ntxiv qhov pib tau txais ntawm 500, 1000, thiab 2000Hz thiab faib cov txiaj ntsig los ntawm 3.
Kev ntsuam xyuas lub suab ntshiab yog dab tsi?
D001301. Lub suab ntshiab audiometry los yog dawb huv - suab nrov audiometry yog lub ntsiab lus tseem ceeb xeem siv los txheeb xyuas qib kev hnov lus ntawm tus kheej, ua rau kev txiav txim siab ntawm qib, hom thiab teeb tsa ntawm kev hnov lus tsis zoo thiab yog li muab lub hauv paus rau kev kuaj mob thiab kev tswj hwm.
Pom zoo:
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Thaum lub sijhawm embryonic kev txhim kho, lub nruab nrab lub paj hlwb (tseem hu ua mesencephalon) tshwm sim los ntawm ob lub vesicle ntawm cov hlab ntsha neural, thaum sab hauv ntawm lub raj no dhau los ua lub paj hlwb. Nws tsis faib mus rau lwm qhov chaw hauv hlwb
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Cov Cim Cim Bony Lub ntsej muag tom qab ntawm patella qhia nrog tus poj niam, thiab tau cim los ntawm ob sab: Lub ntsej muag nruab nrab - kos nrog lub nruab nrab nruab nrab ntawm tus poj niam
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Lub paj hlwb sab hauv suav nrog txhua lub paj hlwb hauv lub cev uas nyob sab nraud ntawm tus txha caj qaum thiab lub hlwb. Cov hlab ntsha no nqa cov ntaub ntawv mus rau thiab los ntawm lub hauv nruab nrab lub paj hlwb kom muab txoj haujlwm ntawm lub cev. Sensory hlwb koom nrog hauv kev noj cov ntaub ntawv los ntawm lub periphery mus rau hauv nruab nrab lub paj hlwb