Flashcards in Efferent System Deck (12):
What are the two main divisions of the efferent system? Which one do we know more about?
-Caudal --> know more about
What are the 3 main feedback loops in the rostral portion? Which is the main auditory
-AC --> IC --> vMGB (main auditory processing loop)
-AC --> IC --> PTG
-AC --> SC --> MGB
The neurons in the LOCB originate from where? Do they mostly have crossed or uncrossed
-Uncrossed projections to the PVCN
The neurons in the MOCB originate from where? Do they mostly have crossed or uncrossed
-MNTB, VNTB, DMPO, VMPO
Describe the connections of MOCB fibers to IHCs and OHCs.
How do rate-intensity functions change with background noise? Noise + MOCB?
-Noise: suppression, increase in neural threshold for CF
-Noise+MOCB: increasing neural firing at high levels to try to overcome noise/return back to sharp/normal tuning and rate-level function
What is the average change in threshold for an ANF with MOCB stimulation?
-15 dB reduction
How does the cochlear microphonic change with MOCB stimulation?
How does the compound action potential change with MOCB stimulation?
How does the summating potential change with MOCB stimulation?
How does the endocochlear potential change with MOCB stimulation?