Which illusion is specifically associated with angular acceleration?

Which illusion is specifically associated with angular acceleration?

• A. Pitch Up Illusion
• B. Somatogyral Illusion
• C. Frequency
• D. Somatogravic Illusions

Answer: (B)

Angular motion is sensed by the vestibular system through the semicircular canals, which respond to changes in rotation—angular velocity and acceleration. When a turn begins or changes speed, the fluid inside the canals lags behind the movement of the canal walls. This lag creates a mismatch between actual motion and what the brain perceives, producing a false sense of rotation or tumbling. That type of illusion is classified as a somatogyral illusion—illusions produced by angular motion and acceleration. A classic example is the Coriolis illusion, which can happen when you move your head during a turn and stimulate a different canal, leading to sudden vertigo and misperception of rotation. Illusions arising from linear acceleration (somatogravic) affect pitch perception, such as a pitch-up or pitch-down sensation during acceleration or deceleration, and are not tied to angular acceleration.

Angular motion is sensed by the vestibular system through the semicircular canals, which respond to changes in rotation—angular velocity and acceleration. When a turn begins or changes speed, the fluid inside the canals lags behind the movement of the canal walls. This lag creates a mismatch between actual motion and what the brain perceives, producing a false sense of rotation or tumbling. That type of illusion is classified as a somatogyral illusion—illusions produced by angular motion and acceleration. A classic example is the Coriolis illusion, which can happen when you move your head during a turn and stimulate a different canal, leading to sudden vertigo and misperception of rotation. Illusions arising from linear acceleration (somatogravic) affect pitch perception, such as a pitch-up or pitch-down sensation during acceleration or deceleration, and are not tied to angular acceleration.