The acoustic analyzer examines hearing through three main parts: the peripheral section, pathway, and cortex zone. The peripheral section includes the outer, middle, and inner ear, which conduct and perceive sound. The pathway involves nerves that transmit signals from the inner ear to the brain. The cortex zone in the temporal lobe of the brain is where acoustic information is processed. Hearing can be tested through methods like whisper speech, tuning forks, and audiometry to diagnose conductive, sensorineural, or mixed hearing loss.

1. PHYSIOLOGY and METHODS of EXAMINATION of the ACOUSTIC ANALYZERS

6. The sound-perceiving part - the sound transforms into nerve impulse

13. Mixed hearing loss

17. Rinne’s test.

18. Rinne’s test – the comparison between air and bone conduction Air > Bone Air < Bone Positive - Normal Perceiving hearing loss Negative - Conductive hearing loss

19. Weber’s test.

20. Weber’s test Normal hearing Normal hearing

21. Weber’s test - lateralized to the health side Normal hearing Perceiving type of hearing loss

22. Weber’s test - lateralized to the sick side Normal hearing Conductive type of hearing loss

23. Schwabach's test.

24. Schwabach's test. Perceiving type of hearing loss Conductive type of hearing loss elongated shortened

25. The difference between two types of hearing loss Shortened Schwabach’s test Elongated Lateralization to the healthy ear Weber’s test Lateralization to the sick ear Positive Rinne’s test Negative Sensori-neural hearing loss Test Conductive hearing loss

27. Pure-tone audiometry