Scene Context: Les repeatedly falls into nightmares where Sarah, the crew, Talani, vacuum, and his own guilt blur together.
Essence of the Phenomenon: Following severe trauma, pain, hypoxia, isolation, and intense pharmacological intervention, consciousness often does not return to "normal sleep." Instead, it falls into fragmented, anxious states hovering between memory, nightmare, and delirium.
Scientific Basis: Patients recovering from critical conditions frequently experience unreal memories, nightmares, hallucinatory fragments, and intrusive memories. These experiences are well-documented in intensive care settings and are linked to ICU delirium, sedation, pain, sleep disruption, and subsequent post-traumatic stress.
Current Limitations: A medically induced coma or deep sedation is not "clean rest" for the psyche. It may save a patient from pain shock, but it can simultaneously exacerbate confusion, anxiety, and pathological dreaming.