Spatial Disorientation Practice Test

A sustained excess of greater than 1G defines which somatogravic illusion?

Nose High Attitude Nose Low Attitude G-Excess Illusion Elevator

Correct Answer:

G-Excess Illusion

Explanation:

In somatogravic illusions, the vestibular system can misread linear accelerations as changes in pitch. When there is sustained forward acceleration that exceeds the force of gravity (greater than 1G), the brain interprets the combined gravity and inertial force as a higher nose attitude than the aircraft actually has. This is the G-excess illusion: the perception of a nose-up attitude caused by the forward, sustained acceleration. That’s why this option fits best. The other sensations are linked to different scenarios: nose-high or nose-low attitudes are misperceptions tied to rotational cues or body orientation, while the elevator illusion comes from abrupt vertical acceleration (upward or downward), not sustained forward acceleration beyond 1G.

Access more questions from this quiz

Continue to Spatial Disorientation Practice Test for more practice questions and the full quiz experience.

Access More Questions