"Doppelganger" is a German term famously used to annotate a twin self—a self that looks just like its original self, but it ...

Hallucinations are often frightening and are caused by mental and general medical illnesses. What are those illnesses? Are ...

The development of many psychiatric disorders, including depression, schizophrenia and bipolar disorder, is known to be in ...

And nicotine really is addictive. The dopamine it stimulates, particularly in a brain area called the nucleus accumbens, ...