Page 382 - Color_Atlas_of_Physiology_5th_Ed._-_A._Despopoulos_2003

A. Loudness processing in acoustic nerve (at constant sound frequency)
Central Processing of Acoustic Information
Quiet Louder Even louder

Acoustic
Cochlea nerve fibers Action potentials
B. Binaural hearing: lag time and latency differences
Sound velocity Sound pressure Pressure
difference
Lag time
Plate 12.30

Central
excitation
Latency time
for nerve
conduction
Nearer ear
Difference
in latency
Averted ear Sound pressure
Difference in sound pressure
C. Cochlear potentials and electrolyte D. Afferent auditory pathway
distribution 10
(See text on p. 366) Primary
auditory
cortex
–70
Endolymph Perilymph MGB 9 8 8 9
mV Superior
Na + Inferior 7 7
Stria K + K + quadrigeminal bodies
vascularis Na + Nucl. of 6
lateral lemniscus 6
+80 to +110
K + Nucl.
accessorius
Superior 4 5
olive
Na + Nucl.cochlearis
–70 (External HC) dorsalis 3
–40 (Internal HC) ventralis 2
1
0
De- 369
Cochlea cussation
Despopoulos, Color Atlas of Physiology © 2003 Thieme
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