Synesthesia in Perspective
OpenAlex – October 14, 2004
Source: OpenAlex
Summary
Synesthesia can lead to fascinating cross-sensory experiences, where stimulation in one sense triggers sensations in another. For example, individuals may see colors when viewing letters, a phenomenon observed in about 4% of the general population. Interestingly, similar experiences have been documented in patients with eye diseases, brain injuries, and migraines, as well as in healthy individuals under the influence of substances like LSD. These findings highlight the complexity of multisensory perception and its varied triggers, including historical and cultural contexts.
Abstract
Abstract The term synesthesia (Greek; syn = together, aesthesia = sensation) has been used to describe a wide variety of phenomena. Most commonly, it is used to denote a condition in which stimulation in one sensory modality also gives rise to an experience in a different modality. However, conditions involving different qualities within one modality (e.g., when the sight of letter shapes evokes color) are labeled synesthesia as well. Phenomena of this sort have also been reported in patients with eye disease, brain damage, and migraines (e.g., Armel & Ramachandran, 1999; Jacobs, Karpik, Bozian & Gothgen, 1981; Podoll & Robinson, 2002). Similar experiences have been reported in healthy individuals using mescaline and LSD (e.g., Hartman & Hollister, 1963) or drinking psychoactive brews such as Ayahuasca (Shanon, 2002). Divine intervention has also been invoked as a possible trigger of synesthesia.