Subjective Experience of “Stream of Consciousness Impairment” in Three Patients with Severe Amnesia
Anaïs Servais, Fleur Gérard, Hélène Mirabel, Marie Rafiq, Marie Wolfrum, Chloé Bost, Fabrice Bonneville, Jérémie Pariente, Emmanuel Barbeau
June 24, 2026 preprint DOI: 10.31234/osf.io/5rea9_v3 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Case series Case report |
|---|---|
| Sample size | 3 |
| Population | Patients with severe anterograde amnesia due to autoimmune encephalitis |
| Keywords | Phenomenon Anterograde amnesia Consciousness Unconscious mind Anosognosia Cognition Cognitive psychology Episodic memory Temporal lobe Recall Retrograde amnesia |
| Key findings | Proposes that severely amnesic patients' recurring belief of having just awakened from an unconscious state represents a distinct phenomenon termed "Stream of Consciousness Impairment." |
Abstract
Patients with severe anterograde amnesia have been described as "stuck in time"; their mental time travel abilities are altered, and they seem to live in the present. Here, we examine an unusual phenomenon in which severely amnesic patients recurrently report the belief that they have just awakened from an unconscious state. A famous case illustrating this phenomenon was that of Clive Wearing who repeatedly wrote “I am now awake” in his diary. This unique cognitive phenomenon has not been specifically studied until now. We report three new patients who described similar subjective experiences. All three patients suffered from autoimmune encephalitis and showed massive bilateral hippocampal inflammation causing severe anterograde amnesia. We propose to call this phenomenon “Stream of Consciousness Impairment”, a reference to William James’s theory according to which, normally, we experience an uninterrupted flow of consciousness. This condition should be added to the spectrum of neurological symptoms that contribute to the study of memory and consciousness in humans.