Hallucinogen persisting perception disorder and the serotonergic system: a comprehensive review including new MDMA-related clinical cases.
European Neuropsychopharmacology August 2014 Ruud P. W. Litjens, Tibor M Brunt, Gerard-Jan Alderliefste et al.
Hallucinogen persisting perception disorder (HPPD) is a drug-induced condition associated with inaccurate visual representations. Since the underlying mechanism(s) are largely unknown, this review aims to uncover aspects underlying its etiology. Available evidence on HPPD and drug-related altered visual processing was reviewed and the majority of HPPD cases were attributed to drugs with...