Brodmann areas 46 and 9 map to which cortical region?

• A. Motor cortex
• B. Somatosensory
• C. Heschl's gyrus
• D. Dorso-lateral prefrontal cortex (DLPFC)

Answer: (D)

Brodmann areas 46 and 9 sit in the dorsolateral prefrontal cortex, the lateral part of the frontal lobe. This region is central to higher-order cognitive control, especially working memory, planning, and flexible thinking. That’s why these two areas map to the dorso-lateral prefrontal cortex.

In contrast, the motor cortex lies along the precentral gyrus (areas primarily involved in initiating movement), the somatosensory cortex sits in the postcentral gyrus (areas processing touch and proprioception), and Heschl's gyrus is the primary auditory area in the temporal lobe (areas 41 and 42). So the correct cortical region for BA 46 and BA 9 is the dorso-lateral prefrontal cortex.