Diaschisis (from Greek, meaning "shocked throughout") is a sudden loss of function in a portion of the brain connected to but at a distance of a damaged area. The site of the originally damaged area and of the diaschisis are connected to each other by neurons. The injury is produced by an acute focal disturbance in an area of the brain. [How to reference and link to summary or text]
The term diaschisis was coined by Constantin von Monakow in 1914. Nowadays the term diaschisis is used to describe a depression of regional neuronal metabolism and cerebral blood flow caused by dysfunction in an anatomically separate but functionally related neuronal region.