Mental Health / Subject directory
Mind, perception
& lived experience.
Reading notes on unusual beliefs, voice-hearing and sleep experiences, with a clear distinction between reported experiences, clinical contexts and proposed explanations.
Published reading notes.
Cotard syndrome: when a person believes they no longer exist
Nihilistic delusions, the limits of rare-case evidence and why the underlying clinical context matters.
Case reports & literature reviewRead note ↗Mental healthHearing voices in an empty room
Auditory hallucinations, inner speech and why hearing a voice does not by itself establish a diagnosis.
Research study & clinical informationRead note ↗Mental health / RecognitionCapgras syndrome: recognition without familiarity
How a familiar person can be recognised in appearance yet believed to be an impostor.
Case-report reviewsRead note ↗Mental health / SleepSleep paralysis: a presence in the room
The frightening experience of waking awareness while movement remains unavailable.
Official clinical informationRead note ↗Charles Bonnet syndrome: images after sight loss
Visual hallucinations associated with significant sight loss, considered separately from psychiatric diagnosis.
Official clinical informationRead note ↗Neurology / RecognitionProsopagnosia: seeing a face, missing the identity
Face blindness and the distinction between seeing facial features and recognising a person.
Official clinical informationRead note ↗Neurology / PerceptionAlice in Wonderland syndrome: altered scale and time
Reports of distortions in visual scale, body experience and the passage of time.
Systematic review of case descriptionsRead note ↗A related question.
Imaginary companions are considered separately as a subject of development and perception. Read what a child actually “sees” ↗.
NHS urgent mental health support ↗