One of the rarer forms of synesthesia, in which spoken or written word results in strong sensations of taste, sometimes including temperature and texture.​

​

The experiences are restricted by early food memories. For example, if an individual has never eaten chocolate, they would not report an association between a word and the taste of chocolate. Due to such constraints, individual sensations vary a great deal as people eat different things.​​

​

It is hypothesized that this condition is attributed to additional connectivity in the insula, a component in the sulcus involved in taste processing. Other research claims it is a result of cross-wiring in the inner sulcus and the temporal lobe. ​

Lexical-Gustatory Synesthesia​