Q.17 Can synaesthesia be acquired?
Yes, but the properties of acquired synaesthesia are somewhat different to those associated with the naturally occurring type. Hallucinogenic drugs such as LSD, magic mushrooms and mescaline can all produce transient forms of synaesthesia (e.g. Hartman & Hollister, 1963). For instance, Albert Hoffmann was the first person to note the psychoactive properties of LSD when he accidentally ingested or breathed it. His lab notes (19th April 1943) clearly describe synaesthesia: "It was particularly striking how acoustic perceptions such as the noise of a passing auto, the noise of water gushing from the faucet or the spoken word, were transformed in to optical illusions." The synaesthesia disappears as the effect of the drug wears off. Although some people can experience 'flashbacks', we are not aware of anyone who claims to have permanently acquired synaesthesia as a result of drug use. Other people have acquired synaesthesia after becoming progressively blind (e.g. Armel & Ramachandran, 1999). It is unclear whether the synaesthesia in these cases is permanent or transient.
There ya go! The lollipops did it!
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