A patient has difficulty carrying out planned movements but can sense touch normally. Which brain region might be involved?

A patient has difficulty carrying out planned movements but can sense touch normally. Which brain region might be involved?

• A. Frontal lobes
• B. Motor cortex
• C. Parietal lobes
• D. Sensory cortex

Answer: (A)

Planning and coordinating voluntary movements happens in the frontal lobes, especially in the premotor and supplementary motor areas that organize the sequence before the primary motor cortex executes the action. If touch sensation is normal, the sensory pathways (parietal/sensory cortex) are functioning, so the issue isn’t with sensing but with organizing a movement. That makes the frontal lobes the most likely region involved. The motor cortex would affect the execution of movement itself, and the parietal/sensory regions relate to sensation and integration rather than the planning of actions.

Planning and coordinating voluntary movements happens in the frontal lobes, especially in the premotor and supplementary motor areas that organize the sequence before the primary motor cortex executes the action. If touch sensation is normal, the sensory pathways (parietal/sensory cortex) are functioning, so the issue isn’t with sensing but with organizing a movement. That makes the frontal lobes the most likely region involved. The motor cortex would affect the execution of movement itself, and the parietal/sensory regions relate to sensation and integration rather than the planning of actions.