What is air conduction in hearing?

Air conduction hearing occurs through air near the ear, and it involves the ear canal and eardrum. Conductive hearing loss occurs when sound waves are unable to pass through the middle ear to the inner ear. This can be caused by problems in the ear canal, eardrum, or middle ear, such as: an infection.

Why is air conduction better hearing?

The inner ear is more sensitive to sound via air conduction than bone conduction (in other words, air conduction is better than bone conduction). Therefore, the affected ear is more sensitive to bone-conducted sound.

What is the air conduction pathway?

The air-conduction (AC) pathway is the normal hearing mode, in which acoustic environmental signals entering the ear canal cause eardrum vibrations to transmit through the middle ear and the cochlear fluids that in turn excite the sensory cells located on the delicate cochlear tissues.

What does it mean when air conduction is greater than bone conduction?

If the bone conduction is the same or greater than the air conduction, there is a conductive hearing impairment on that side. If there is a sensorineural hearing loss, then the vibration is heard substantially longer than usual in the air. Make sure that you perform both the Weber and Rinne tests on both ears.

Does conduction work well in air?

Cooling of electronic equipment is space is difficult. Convection does not work either in the absence of air or gravity. Forced air cooling with fans defiinitely does not work in the absense of air(fans turn but air does not move). Conduction works but what it conducts to does not convect well, either Radiation works.

What is the average air conduction hearing threshold?

An average air conduction hearing threshold of 70 decibels or greater in the better ear, or a bone conduction hearing threshold of 40 decibels or greater in the better ear. A word recognition score of 40% or less in the better ear.

What does air conduction test?

Air Conduction. Air conduction testing includes listening to tones of different frequencies under earphones and finding the lowest possible volume of detection for each frequency tone. Air conduction is testing the entire hearing mechanism from the outer, middle to inner part of the ear.

What is an air conduction hearing test?

The air conduction, or pure tone hearing test, uses headphones and a series of short of beeps at different intensities and intervals. The bone conduction test involves a bone oscillator, or vibrator, placed on the mastoid.