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| Laboratory 13 : Tract Systems II |
| Auditory Tract |
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Auditory Tract
It is important to note that:
- Information from receptor cells in cochlea distributed bilaterally; most goes to contralateral side
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Slide 62 : Diencephalon
- Axons of auditory radiation terminate in primary auditory cortex in the superior temporal gyrus (temporal lobe)
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Slide 51 : Midbrain & Diencephalon
- Axons from BIC synapse in MGN
- Axons from MGN enter internal capsule as the auditory radiation
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Slide 47 : Pons & Midbrain
- Axons continue rostrally through brachium of caudal colliculus (BIC)
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Slide 43 :
- Axons from LL synapse in caudal colliculus (IC)
- Axons from IC pass rostrally through BIC toward medial geniculate nucleus (MGN)
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Slide 34 : Rostral Medulla
- SA axons from cochlea enter via CNVIII, go to cochlear nuclei
- Some fibers decussate in tegmentum, others in trapezoid body
- Info carried rostrally in lateral lemniscus (LL)
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Copyright © 2006 - University of Pennsylvania School of Veterinary Medicine, All rights reserved.
Faculty: Dr. Richard Miselis, Dr. Peter Hand
Students: Natalie Fickel V'12, Ryan Donahue V'09, Cara Catanese V’08, Rebecca Wolf V'06, Keith Javic V'03, Ken Bixel V'99, Russel Howe-Smith V'97
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