Hallucinogen Persisting Perception Disorder (HPPD) is a cognitive disorder in which individuals continuously re-experience visual and other sensory hallucinations that they first experienced while ...

It's a rare disorder first described in 1995 that's estimated to affect up to 2% of the population. Studies suggest depression, anxiety, and poor sleep are common side effects. On an online forum when ...

In a recent review published in Brain Sciences, researchers reviewed existing data on visual impairments among Parkinson’s disease (PD) patients. Parkinson's disease (PD), a widely prevalent ...

The Rorschach Inkblot Test (RIT) was developed in 1921 by Swiss Psychiatrist Hermann Rorschach. While working in an inpatient psychiatric hospital, Rorschach experimented with upwards of 40 inkblots.

New research published in Neuropsychologia provides evidence that adults with dyslexia process visual information differently than typical readers, even when viewing non-text objects. The findings ...