Cochlear Implants Flashcards
The outer ear _______ and _____ sound
collects and shapes
the pinna provides ________ cues
direction
the canal/meatus resonates at __-___ speech frequencies
mid-high
the middle ear provides a ___________ advantage to go from ___-_____ to ____-____ vibration
mechanical; air-borne; liquid-borne
the inner ear transforms _____ to ____ information
vibration to nueral
What is tonotopic organization
different places on the BM vibrate in response to different frequencies, so different nerve fibers carry information about different frequencies
A cochlear implant is an ________ device that can help provide a sense of ____ to a person who is ________ ____. It is implanted _______ under the ___ behind the ___
electronic; sound; profoundly deaf; surgically; skin; ear
What are the 4 basic parts of a CI?
microphone, speech processor, transmitter and receiver/stimulator, electrodes
What does the microphone do?
picks up sound from the environment
What does the speech processor do?
selects and arranges sounds picked up by the microphone
What does the transmitter and receiver/stimulator do?
receive signals from the speech processor and converts them to electrical impulses
What do the electrodes do?
collect the impulses from the stimulator and send them to the brain
Which parts of the CI are worn outside of the body? (3)
microphone, processor, transmitter
Which parts of the CI are implanted? (2)
receiver, electrode array
Different ________ stimulate ____ _____ at different places on the ________ _________
electrodes; nerve fibers; basilar membrane
