Page 97 - Darwin's Dilemma: The Soul

Harun Yahya (Adnan Oktar)

Sounds from the outside are converted by the external and middle ear into fluid
waves in the inner ear. Following a series of processes, these waves are transmit-
ted in the form of electrical signals to the brain, where they are perceived as
sounds. Therefore, external sound for us exists only as long as we perceive it.
What we hear is the product of these electrical signals inside our brain.

Sound waves

Cochlea
Complex sound
Stirrup
wave from a Tympanic membrane
single note
Unrolled view
of cochlea
Slice of cochlea
Auditory
nerve
fibers
Hair cell

Relative amplitude of
motion in membrane
Basilar
membrane
Motor
Auditory nerve fibers ending on different cortex
neurons, set out according to varying fre-
quencies Auditory
cortex

Plane of cross
section
Auditory
Thalamus
cortex

Cerebellum Brain stem

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