Auditory Nerve & ANS

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Neural action potentials always fire at…

type 1

Neuron that connects to inner hair cells

type 2

Neuron that connects to outer hair cells

IHC

Cell type that receives more afferent innervation

OHC

Cell type that receives more efferent innervation

OHC

Type of hair cell that receives less overall innervation; one neuron to many cells

stronger

Compared to ipsilateral pathways, contralateral pathways are…

superior olivary complex

group of nuclei in the brainstem that integrate auditory information and receives the first input

binaural integration

Term for more innervation from each ear to the opposite brain hemisphere

phase locking

Timing of nerve impulses that closely corresponds to sound waves; only works with lower frequencies

more nerve fibers will fire

In response to a louder or more intense signal…

binaural summation

Two ears are better than one

binaural squelch

ability to mentally focus on a sound source that you want to hear