The term conceptual synaesthesia comes from the Latin adjective conceptualis (pertaining to the mental concept), and the Greek words sun (together, unified), and aisthanesthai (to notice, to perceive). The concept was introduced in or shortly before 1954 by the Hungarian-Dutch experimental psychologist Géza Révész (1878-1955) to denote a *synaesthesia in which the secondary sensation is an ideated sensation rather than a hallucinated percept. For example, in * colour hearing of the conceptual synaesthe-sia type the actual sound of a trumpet may trigger an imagined colour rather than a hallucinated colour. The term conceptual synaesthesia is used in opposition to the terms * mental synaesthesia and * perceptual synaesthesia.
References
Révész, G. (2001). Introduction to the psychology ofmusic. Translated by de Courcy, G.I.C. Mineola, NY: Dover Publications.
Dictionary of Hallucinations. J.D. Blom. 2010.