AP PSYCHOLOGY

SENSATION AND PERCEPTION

BASIC CONCEPTS OF SENSATION AND PERCEPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The cochlea is responsible for
A
protecting the surface of the eye.
B
transmitting vibrations received by the eardrum to the hammer, anvil, and stirrup.
C
transforming vibrations into neural signals.
D
coordinating impulses from the rods and cones in the retina.
Explanation: 

Detailed explanation-1: -The cochlea is filled with a fluid that moves in response to the vibrations from the oval window. As the fluid moves, 25, 000 nerve endings are set into motion. These nerve endings transform the vibrations into electrical impulses that then travel along the eighth cranial nerve (auditory nerve) to the brain.

Detailed explanation-2: -The cochlea is a hollow, spiral-shaped bone found in the inner ear that plays a key role in the sense of hearing and participates in the process of auditory transduction. Sound waves are transduced into electrical impulses that the brain can interpret as individual frequencies of sound.

Detailed explanation-3: -The ear drum sends these vibrations to the three tiny bones in the middle ear called the malleus, incus, and stapes. The bones in the middle ear amplify, or increase, the sound vibrations and send them to the cochlea in the inner ear.

Detailed explanation-4: -SOUND WAVES enter the ear canal and cause the eardrum to vibrate. VIBRATIONS pass through 3 connected bones in the middle ear. This motion SETS FLUID MOVING in the inner ear. Moving fluid bends thousands of delicate hair-like cells which convert the vibrations into NERVE IMPULSES.

Detailed explanation-5: -Auditory vibration transmitted from the tympanic membrane through the ossicles into the oval window, then the perilymphatic fluid of the SV and ST triggers the vibration of the basilar membrane that stimulates the organ of Corti which generates the afferent signals of the cochlear nerve.

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