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Case Report Details French Teen With Hyperthymesia and Vivid Mental Time Travel

The Neurocase report outlines a rare profile yet cautions that single-case findings cannot be generalized.

Overview

  • Researchers describe TL, a 17-year-old in France, who can voluntarily re-experience personal events and generate richly detailed, plausible future episodes with a strong sense of pre-experience.
  • TL portrays her autobiographical memories as organized within a mental “white room” divided into thematic areas such as family, vacations, friends, and toys, each with specific tags.
  • She distinguishes this vivid autobiographical system from a “black memory” for academic knowledge that lacks emotional tone and requires deliberate effort to access.
  • Standardized assessments (TEMPau and TEAAM) showed performance well above norms for detailed recall and episodic simulation, with a modest drop in vividness for distant future events consistent with typical patterns.
  • The authors, based at the Paris Brain Institute and Université Paris Cité, note the absence of public-event and long-term calendar tests and present the case as a starting point for research on links between memory, spatial imagery, emotion, and control.