Evidence for the perception of time distortion during episodes of Alice in wonderland syndrome

Yu Jia*, Ying Miao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Alice in Wonderland syndrome (AIWS) is a rare perceptual disorder associated with sensation of one or several visual and/or auditory perceptual distortions including size of body parts, size of external objects, or passage of time (either speeding up or slowing down). Cause for AIWS is yet to bewidely agreed, and the implications are widely varied. One of the research difficulties is the brevity of each episode, typically not exceeding few tens of minutes. This article presents a male adult in late 20s who has apparently experienced AIWS episodes since childhood, and infection has been ruled out. Reaction speed tests were conducted during and after AIWS episodes, across a span of 13 months. Statistically significant evidence is present for delayed response time during AIWS episodes when the patient claims to experience a sensation of time distortion: where events seem to move faster and people appear to speak quicker.

Original languageEnglish
Pages (from-to)473-475
Number of pages3
JournalJournal of Nervous and Mental Disease
Issue number6
Publication statusPublished - 1 Jun 2018


  • Alice in Wonderland syndrome
  • Response time
  • Time distortion


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