Our perception of the pull of gravity and linear acceleration is the result of
A) changes in the pressure exerted by the cupula on hair cells.
B) vibrations of the tectorial membrane striking hair cells.
C) the pressure exerted by the otolithic organ on hair cells of the maculae.
D) the movement of the otolithic organ within the ampullae of the semicircular canals.

Question

Quizplus · Accepted Answer

The pressure exerted by the otolithic organ on hair cells of the maculae is responsible for our perception of both the pull of gravity (due to the presence of otoliths, or small calcium carbonate crystals, that respond to changes in head position) and linear acceleration (changes in head movement along a straight line). The other options (A, B, and D) are not related to these specific sensations.

Our Perception of the Pull of Gravity and Linear Acceleration