Which task is not controlled by the left side of the brain?

The left side of the brain is primarily associated with several functions, particularly those related to language, logical reasoning, and analytical tasks. Language processing and mathematical calculations rely heavily on the left hemisphere, where areas like Broca's area and Wernicke's area are located, playing crucial roles in speech production and understanding, respectively. Similarly, logic and reasoning tasks are often dominated by the left brain's linear processing style.

Visual imagery, on the other hand, is generally linked more to the right hemisphere of the brain. The right side is known for its strengths in holistic thinking, intuition, and visual-spatial abilities, including the ability to create mental images. Therefore, among the options provided, visual imagery is the task that is not predominantly controlled by the left side of the brain. Understanding this distinction is essential for grasping the broader concepts of lateralization of brain function and how different cognitive tasks are specialized in different hemispheres.