EE 225D LECTURE ON EAR PHYSIOLOGY N.MORGAN / B.GOLD LECTURE 15 15.1 University of California Berkeley College of Engineering Department of Electrical Engineering and Computer Sciences Professors : N.Morgan / B.Gold EE225D Spring,1999 Ear Physiology Lecture 15
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Lecture 15 - University of California, Berkeley · Ear Physiology Lecture 15. ... - Peripheral Auditory System - Hair Cell Auditory Nerves - Auditory Nerve - Adaptation - Synchrony
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EE 2 LECTURE ON EAR PHYSIOLOGY
N.M 15.1
PE Spring,1999
25D
ORGAN / B.GOLD LECTURE 15
University of CaliforniaBerkeley
College of EngineeringDepartment of Electrical Engineering
and Computer Sciences
rofessors : N.Morgan / B.GoldE225D
Ear Physiology
Lecture 15
EE 2 LECTURE ON EAR PHYSIOLOGY
N.M 15.2
n
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ORGAN / B.GOLD LECTURE 15
Introduction : Anatomy - OK , Physiology - NOT OK.
- Anatomical Pathway
- Peripheral Auditory System
- Hair Cell Auditory Nerves
- Auditory Nerve
- Adaptation
- Synchrony- Non Linearities
- Two Tone Suppresio- Saturation- Masking- Combination Tones
- Block Diagram of Periphey
- Tuning
EE 2 LECTURE ON EAR PHYSIOLOGY
N.M 15.3
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Some Auditory Jargon.
afferent ascending nerve fibers
efferent descending nerve fibers
tonotopic Frequency selectivity vs. place.
{Bank of filters concept}
Malleus Incus Stapes Inner Ear
Innervate connect to
Cochlea Inner Ear
Middle Ear OssiclesOval Window of
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nkey.
lls
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Table 14.1 : Cells in the Auditory Nuclei of the Mo
Central Auditory Nucleus Number of Ce
Cochlear Nuclei
Superior-Olivary Complex
Muclei of Lateral Lemniscus
Inferior Colliculus
Medial Geniculate Body Auditory Cortex
88,000
34,000
38,000
32,000
364,000
10,000,000(pars principalis)
- We are somewhat familier with cochlear nucleus.
- There is also work on auditory neurons in Cortex.
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uditory Pathways
in with the Ear.
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Diagram of the A
linking the Bra
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N.M 15.6
r ears are appproximate.
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Figure 14.3 : The Peripheral Auditory System. Boundaries between outer, middle, and inne
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N.M 15.7
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N.M 15.8
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N.M 15.9
iagram of Peripheral
y System.
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Block D
Auditor
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N.M 15.10
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N.M 15.11
Cochlea.
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Figure 14.7 : Drawing of the cross-section of the
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N.M 15.12
lea.
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Figure 14.4 : Simplified Model of the Coch
EE 225D LECTURE ON EAR PHYSIOLOGY
N.MORGAN / B.GOLD LECTURE 15 15.13
Computer Model of Basilar-Membrane Displacement.
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ce lls
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F igure 14.7 : Sketch of the inner and ou ter ha ir