Phenomenon in which concepts evoke sensory experiences
Ideasthesia (alternative spelling ideaesthesia) is a neuropsychological phenomenon in which activations of concepts (inducers) evoke perception-like sensory experiences (concurrents). The name comes from the Ancient Greek ἰδέα (idéa) and αἴσθησις (aísthēsis), meaning 'sensing concepts' or 'sensing ideas'. The notion was introduced by neuroscientist Danko Nikolić as an alternative explanation for a set of phenomena traditionally covered by synesthesia.[1]
While synesthesia meaning 'union of senses' implies the association of two sensory elements with little connection to the cognitive level, empirical evidence indicated that most phenomena linked to synesthesia are in fact induced by semantic representations. That is, the linguistic meaning of the stimulus is what is important rather than its sensory properties. In other words, while synesthesia presumes that both the trigger (inducer) and the resulting experience (concurrent) are of sensory nature, ideasthesia presumes that only the resulting experience is of sensory nature while the trigger is semantic.[2][3][4][5][6][7]
Research has later extended the concept to topics other than synesthesia, and since it turned out to be applicable to everyday perception, the concept has developed into a theory of how we perceive. For example ideasthesia has been applied to the theory of art and could bear important implications in explaining human conscious experience, which, according to ideasthesia, is grounded in how we activate concepts.[8]
^Nikolić, D. (2009). "Is synaesthesia actually ideaesthesia? An inquiry into the nature of the phenomenon". Proceedings of the Third International Congress on Synaesthesia, Science & Art, Granada, Spain, April 26–29, 2009. S2CID 44135322.
^Dixon, M.J., Smilek, D., Duffy, P.L., Zanna, P. M., Merikle, P. M. (2006) The Role of Meaning in Grapheme-Colour Synaesthesia, Cortex 42: 243-252.
^Mroczko A., T. Metzinger, W. Singer, D. Nikolić (2009) Immediate transfer of synesthesia to a novel inducer. Journal of Vision, 9: 2521-2528.
^Simner, J.; Ward, J. (2006) The taste of words on the tip of the tongue, Nature 444: 438.
^Nikolić, D., U.M. Jürgens, N. Rothen, B. Meier, A. Mroczko (2011) Swimming-style synesthesia. Cortex, 47(7):874-879.
^Chiou, R., Rich N.A. (2014) The role of conceptual knowledge in understanding synaesthesia: Evaluating contemporary findings from a ‘hub-and-spoke’perspective. Frontiers in Psychology, 5: 105.
^Curwen, C. (2018). Music-colour synaesthesia: Concept, context and qualia. Consciousness and Cognition, 61, 94-106.
^Mroczko-Wąsowicz, A., Nikolić D. (2014) Semantic mechanisms may be responsible for developing synesthesia. Frontiers in Human Neuroscience 8:509. doi:10.3389/fnhum.2014.00509
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