Experiment that creates altered states of consciousness sheds light on an old problem.
It's possible that low oxygen levels in caves produced hallucinations – but that doesn't explain the majority of prehistoric art.
Research suggests mediums possess a proclivity for hallucinatory experiences.
A new review assesses the potential long-term psychological impact of COVID-19.
Charles Bonnet syndrome refers to visual hallucinations in people with acquired vision loss, and symptoms can last for many years.
As many as one in ten people will have a psychotic experience in their lifetime – and researchers now know your genes play a role.
Playing with imaginary friends in childhood is linked to being more creative as an adult.
A safety committee convened by the FDA has declared esketamine safe for severe depression. But isn’t this drug the same as ketamine, an illegal street drug? A medical anthropologist explains.
Depression, an altered sleep cycle, and hallucinations are some of the effects of living alone in total darkness.
The scientific explanations might not be definitive, but your brain is largely responsible.
Just ask Céline Dion – and countless others.
A study in the 1960s brought together three people who believed they were Christ – the results still tell us much today about how well we recognise our own delusions.
Brain chemicals could explain some of these experiences, but so could bullying and social isolation.
Have you ever checked your phone thinking you had felt it vibrate or heard it ring, only to see that no one tried to reach you? One researcher decided to study this phenomenon.
Delirium is a neurological (nervous system) condition where a person becomes suddenly confused. Around one in five elderly people in hospital suffer from delirium.
Shaman have used the psychoactive effects of ayahuasca for spiritual and healing purposes for hundreds of years. But a new breed of tourist has discovered this plant-based drug.
When human contact is cut off, the brain begins to act in strange ways to preserve its sanity.
Our study published this week shows a new method to induce and measure visual hallucinations in anyone at any time.
During the 1950s and 1960s, LSD was used more for psychotherapy than recreation. Between 1950 and 1965, many were treated with LSD for alcoholism, depression, schizophrenia, autism and homosexuality.
A new study of the brain structure of schizophrenics has revealed an important clue that could help treat hallucinations.