thumb|right|Example of associations between graphemes and colors that are described more accurately as ideasthesia than as synesthesia 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 () and (), meaning 'sensing concepts' or 'sensing ideas'. The notion was introduced by neuroscientist Danko Nikolić, but can be seen in examples in the Ethics of Spinoza (especially in the third part of the Ethics), as an alternative explanati
thumb|right|Example of associations between graphemes and colors that are described more accurately as ideasthesia than as synesthesia 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 () and (), meaning 'sensing concepts' or 'sensing ideas'. The notion was introduced by neuroscientist Danko Nikolić, but can be seen in examples in the Ethics of Spinoza (especially in the third part of the Ethics), as an alternative explanation for a set of phenomena traditionally covered by synesthesia.
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.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).