A term introduced in or shortly before 1951 by the American neurologist Caro W. Lippman (1886-1954) as an umbrella term for various types of * kinaesthetic hallucination in which the entire body and/or one's surroundings seem to be in motion. Examples of Lippman's spacemotion hallucination include 'impressions of various motions of the bed' (exemplified by the * earthquake), sensations of acceleration, * slow-motion hallucinations, and *dead-weight hallucinations. Because of their association with migraine, space-motion hallucinations may be classified as * aural phenomena.
References
Lippman, C.W. (1951). Hallucinations in migraine. American Journal of Psychiatry, 107, 856-858.
Dictionary of Hallucinations. J.D. Blom. 2010.