Cognition is all about the persons thinking ability. It includes things like planning, organising, problem solving and decision making.

Cognition also includes control of our emotions, social skills, and behaviour.

When a person has cognition problems after stroke it can have a significant effect on their life and that of the carer. Personality may change or existing personality traits become more exaggerated. The person may not have insight into this change which makes helping them much harder. This can be seem worse if the person has very little physical impairment from the stroke, almost as if their main loss of function is invisible to everyone but those closest to them.