Page 665 - Atlas of Creation Volume 4

Harun Yahya

Sounds coming from the outside are converted by the middle and outer ear into fluid waves transmitted to
the inner ear. Following a series of processes, these waves are transmitted to the brain in the form of elect-
ric signals and are perceived as sounds in the brain. Therefore, sound on the outside exists for us only for
so long as we perceive it. Everything we hear is a product of these electric signals inside the brain.

Sound waves

Cochlea

A complex sound Stirrup
wave coming from
a single note Tympanic membrane

Unrolling of cochlea

Cross-section of the cochlea
Auditor
y nerve
fibers

Hair cells

Relative width of the frequency
along the membrane
Basilar
membrane

Motor
cortex
Auditory nerve fibers tuned to different
frequencies and ending in different neurons

Auditory
cortex

Cross-section plane

Auditory
cortex
Thalamus

Brain stem
Cerebellum

Adnan Oktar 663