Recent theoretical and empirical work on predictive processing and brain plasticity may help explain both the onset of and ...

Hallucinations are unreal sensory experiences, such as hearing or seeing something that is not there. Any of our five senses (vision, hearing, taste, smell, touch) can be involved. Most often, when we ...

Have you ever felt the strong sensation that someone is behind you, so intense that you turn around, only to see that no-one is there? This is a 'presence hallucination'. Presence hallucinations are ...

Migraine is a neurological condition that affects about 39 million people in the United States. Aura symptoms can include trouble speaking, tingling, weakness, or vision changes. Visual aura is common ...

Medically reviewed by Arno Kroner, DAOM Key Takeaways Sleep deprivation can start causing hallucinations after just 24 hours ...

A growing body of neuroimaging research is pinpointing exactly how psychedelic drugs hijack the brain’s visual system to produce vivid hallucinations, even when a person’s eyes are closed. Studies ...