You are most likely to experience somatogravic illusion during

Explanation

PHAK Chapter 17 and AIM 8-1-5 describe the somatogravic illusion as a rapid acceleration, such as on takeoff, stimulating the otolith organs and creating the sensation of being nose-up; a pilot who reacts may push the nose down into the ground. A rapid deceleration can produce the opposite sensation, but the classic and most likely case is the acceleration on takeoff, particularly into a dark night.