Hearing Flashcards
Noise
Is a vibration
Vibrations cause waves. We collect the waves and transduce them into ..?
Neural messages
No ear = …
No sound
All sounds have …?
Pitch, loudness, and timbre
More waves = …?
The higher the pitch
Less waves = ..?
Lower the pitch
Human pitch limits
Lowest 20Hz
Highest 200 mHz
Loudness
Known as volume or wave amplitude
Loudness is the size of the …?
Wave
Bigger waves are ..?
Louder
Smaller waves are ..?
Quieter
Timbre
Known as tone.
Tone is the complexity of ..
Sound
Tone allows
People to distinguish between different voices
Three Main areas of the ear
Outer ear, middle ear, inner ear
Outer ear has two parts:
Ear canal and ear drum
Ear canal
Funnel where sounds travel through. Filled with wax and pressurization.
Ear drum
Thin film that vibrates when sound hits
What is the middle ear one main job?
Amplify sounds
There are three small bones in the middle ear.. what are they?
Hammer, anvil, and stirrup
Also located in the inner ear is a sinus tube called ..?
Eustachian tube
What does Eustachian tube help with ..?
Helps relieve pressurization
Inner ear has two main parts
Cochlea and Auditory nerve
Cochlea looks like a …?
Snail
Cochlea is filled with liquid, vibrations hit the liquid and
Cochlea turns vibrations into neural messages
Auditory nerve
Connects the cochlea to thalamus
What the reasons people can experience deafness?
1) birth defects
2) injury
3) genetics
4) diseases
5) old age
Conductive deafness
Most common; bones in the middle ear wear out. No cure. Old ppl
Sensory Neural deafness
Issues or damage to inner ear. Hard to fix.
Example of sensory neural deafness
Ringing in the ear after a prolonged expose of loud noises
