Localization of sounds in the vertical plane (above or below)is aided by
A)the existence of sound "shadow."
B)an analysis of the intensity of sounds reaching each ear.
C)the effect of the pinna on incoming sounds.
D)an analysis of the arrival time of sounds at each ear.

Question

Localization of sounds in the vertical plane (above or below)is aided by​ 
A)the existence of sound "shadow." 
B)an analysis of the intensity of sounds reaching each ear. 
C)the effect of the pinna on incoming sounds. 
D)an analysis of the arrival time of sounds at each ear.

Quizplus · Accepted Answer

The pinna, which is the outer part of the ear, plays a significant role in localizing sounds in the vertical plane. The shape and orientation of the pinna differ for sounds that come from above or below, which allows the brain to decode the direction from which the sound is coming. This process is known as sound localization in the vertical plane. The existence of sound shadow, analysis of the sound intensity, and arrival time at each ear are more useful in localizing sounds in the horizontal plane.

Localization of Sounds in the Vertical Plane (Above or Below)is