Acquired synaesthesia following 2C-B use
Psychedelic drugs reliably trigger experiences that closely resemble synaesthesia (Luke and Terhune 2013), a condition in which inducer stimuli will reliably and automatically elicit atypical concurrent experiences (Ward 2013). These transient episodes are considered controversial because they do not meet behavioural diagnostic criteria for developmental synaesthesia (Terhune et al. 2016). However, if these behavioural markers are attributable to the consolidation of synaesthetic associations over time (Terhune et al. 2016), they should be observed in cases of acquired synaesthesia. Here we report a case of drug-induced acquired synaesthesia (LW) that meets standard diagnostic criteria for developmental synaesthesia.
LW is a 29-year-old male who reports continuously experiencing multiple forms of synaesthesia for over 7 years since ingesting approximately 70–150 mg of 2,5-dimethoxy-4-bromophenethylamine (2C-B) (Papaseit et al. 2018), which greatly exceeds the normal dosage (12–24 mg)...
SY: study concept and design, data acquisition, analysis and interpretation of data, and drafting/revising the manuscript. DPL: study concept and design, data interpretation, and revising the manuscript. AJ: study concept and design, data interpretation, and revising the manuscript. DBT: study concept and design, data acquisition, analysis and interpretation of data, and drafting/revising the manuscript.
Compliance with ethical standards
Conflict of interest
The authors declare no conflicts of interests.
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