- The term mesencephalic hallucinosis is indebted to the Greek words mesos (middle) and enkepha-los (that which is inside the head, i.e. the brain). It translates loosely as 'midbrain hallucination'. The term mesencephalic hallucination was proposed in 1937 in a posthumously published study by the Russian neuropsychologist and psychoanalyst Aron Borisovich Zalkind (18881936) to replace the older term "peduncular hallucinosis.ReferencesAgadjanian, K. (1946). Le mécanisme des troubles perceptive-associatifs en rapport avec l'origine de l'hallucination et du délire. Étude physio-pathologique. Paris: J. Peyronnet et Cie.Zalkind, A.B. (1937). [Article in Russian] Neu-rologia i Psychatria,6.
Dictionary of Hallucinations. J.D. Blom. 2010.
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peduncular hallucination — Also known as peduncular hallucinosis, pedunculopontine hallucinosis, Lhermitte s hallucinosis, Lhermitte syndrome, *brainstem hallucination, and mesencephalic hallucinosis. The eponyms Lhermitte s hallucinosis and Lhermitte syndrome refer to… … Dictionary of Hallucinations