If the right side is affected, which side is considered dominant?

If the right side is affected, the left side is considered dominant due to the concept of lateralization of brain function. The human brain has two hemispheres, and each hemisphere typically governs different functions and controls different sides of the body. It is commonly accepted that for most individuals, particularly right-handed people, the left hemisphere is dominant for language and fine motor skills.

In situations where the right side is affected by an injury or condition, often it indicates that the left hemisphere is functioning at a higher capacity or is more influential in controlling bodily movements and cognitive tasks. Therefore, the left side, being linked to the dominant hemisphere, becomes the focal point of function and control in such contexts. This understanding aligns with the concepts of cerebral dominance and lateralization of function in the brain, making the notion of "default is dominant" accurate in this scenario.