There are three different properties of sound waves that might differ between your left ear and right ear if a sound came from the left:

1) Time of arrival 2) Intensity 3) Phase differences

hit your left ear first. This method is useful for sounds with a sudden onset. If sounds start more gradually, it's harder to perceive a difference in time of arrival.

The sound will hear louder to the ear closer to the sound. The head absorbs some energy from the sound wave, blocking it from hitting the far ear. In humans, this is best for frequencies above 2000-3000 Hz.

The sound wave will strike the left ear and the right ear out of phase - one ear might experience a peak while the other experiences a valley. In humans, this is best for frequencies below 1500 Hz.

1) For low frequencies, the basilar membrane (in the cochlea) vibrates in synch with a sound wave, and single axons within the auditory nerve produce one action potential per peak in the sound wave.

For middle frequencies, the basilar membrane still vibrates in synch with the wave, but no single cell can keep up and fire an action potential at each peak. However, different cells fire at different peaks, so the nerve still has one action potential pe

) For high frequencies, different parts of the basilar membrane vibrate somewhat independently - different places along the membrane will fire when you hear a tone of different pitches (place theory).

Help

Options

focusNode

Didn't know it?
click below

Knew it?
click below

Don't Know

Remaining cards (0)

Know

retry

shuffle

restart

0:00

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

Normal Size Small Size show me how

bio psych

test 2

Question	Answer
There are three different properties of sound waves that might differ between your left ear and right ear if a sound came from the left:	1) Time of arrival 2) Intensity 3) Phase differences
Time of arrival	hit your left ear first. This method is useful for sounds with a sudden onset. If sounds start more gradually, it's harder to perceive a difference in time of arrival.
Intensity	The sound will hear louder to the ear closer to the sound. The head absorbs some energy from the sound wave, blocking it from hitting the far ear. In humans, this is best for frequencies above 2000-3000 Hz.
Phase differences	The sound wave will strike the left ear and the right ear out of phase - one ear might experience a peak while the other experiences a valley. In humans, this is best for frequencies below 1500 Hz.
frequency theory	1) For low frequencies, the basilar membrane (in the cochlea) vibrates in synch with a sound wave, and single axons within the auditory nerve produce one action potential per peak in the sound wave.
volley principle	For middle frequencies, the basilar membrane still vibrates in synch with the wave, but no single cell can keep up and fire an action potential at each peak. However, different cells fire at different peaks, so the nerve still has one action potential pe
place theory	) For high frequencies, different parts of the basilar membrane vibrate somewhat independently - different places along the membrane will fire when you hear a tone of different pitches (place theory).

Created by: tracialeshea

Popular Biology sets

Genetics: Monohybrid, Dihybrid, & Non-Mendelian

Unit 2- Requirements of Life

Evidence of Evolution

"Know" box contains:
Time elapsed:
Retries: