This is because the body naturally employs particular muscle groups to produce certain motions in cooperation with other groups of muscles. Synergy patterns are not exclusive to people who have had a stroke they may also be seen in healthy persons. To put it another way, when a synergy pattern is present, several muscles collaborate in order to carry out a certain action, as opposed to each muscle acting separately to carry out the movement. The term “synergy patterns” refers to the manner in which several muscle groups in the body create movement by cooperating with one another, also known as “synergizing.” They are distinguished from the isolated activity of individual muscle groups by the coordinated action of many muscle groups rather than by the activity of individual muscle groups acting alone.