The subjective experience of time during lysergic acid diethylamide (LSD-25) intoxication


A brief review of the literature in relation to time disorder and LSD-25 is given. Twenty nine patients were studied as regards their time experiences under LSD-25. Eight patients reported an altered time experience following the initial administration of the drug. Twelve patients who had not developed a time disturbance in their initial administration, received LSD-25 a second time at increased dosage, 5 of these patients then experienced a time disturbance.

There was a tendency for time disorder to be associated with visual perceptual changes and for it to occur in the non-schizophrenics. Time disorder was considered to be a non-specific response. Recent views on the nature and genesis of time disorders are discussed.

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Kenna, J.C., Sedman, G. The subjective experience of time during lysergic acid diethylamide (LSD-25) intoxication. Psychopharmacologia 5, 280–288 (1964).

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  • Subjective Experience
  • Time Experience
  • Perceptual Change
  • Lysergic Acid
  • Initial Administration