A recent study I was involved in, led by my colleagues at Cambridge University, found a relation between the length of a specific groove in the frontal lobe of the brain (formally termed the paracingulate sulcus, although dubbed a ‘brain wrinkle’ by the BBC) and the likelihood that a person diagnosed with schizophrenia will have experienced hallucinations.
You can discover more about the study through Cambridge University’s press release, through a summary by other members of the team based at Durham University, or through reading the paper itself. The reference and link are below.
Jane Garrison, Charles Fernyhough, Simon McCarthy-Jones, Mark Haggard, the Australian Schizophrenia Research Bank and Jon Simons, ‘Paracingulate sulcus morphology is associated with hallucinations in the human brain’, Nature Communications, November 2015.
Oh, and thanks to George Takei (Star Trek’s Mr. Sulu) for the mention: