What is the primary benefit of using synergies in postural control?

• A. Increase processing demands
• B. Simplify control demands and processing time
• C. Rely solely on vision
• D. Increase the number of motor commands required

Answer: (B)

Synergies in postural control refer to coordinating groups of muscles to act together as functional units, which reduces the complexity the brain must manage. By activating a small set of synergy patterns rather than issuing separate commands to every muscle, the nervous system stabilizes the body more efficiently. This grouping lowers processing demands and speeds up response time to perturbations, helping maintain balance quickly and robustly. The other options miss the point: relying solely on vision isn’t the primary benefit, and increasing processing demands or the number of motor commands would make control slower and more complex rather than easier.