Which area of the brain is also known as Areas 3, 1, and 2?

The area of the brain known as Areas 3, 1, and 2 is the postcentral gyrus. This region is critically involved in the processing of somatosensory information. Areas 3, 1, and 2 correspond to specific parts of the primary somatosensory cortex, which is responsible for sensory perception related to touch, pressure, temperature, and pain. The postcentral gyrus occupies the parietal lobe of the brain and is situated just posterior to the central sulcus, making it an essential part of the sensory pathways that inform the brain about the body's external environment.

Understanding the function and location of the postcentral gyrus helps in grasping how sensory input is processed and contributes to our perception of the world. The other choices refer to different regions of the brain that have distinct roles, such as higher cognitive functions, motor control, and visual processing, but they do not encompass the areas designated as areas 3, 1, and 2 specifically associated with somatosensory functions.