Which cortical areas beyond S1 integrate texture and shape for object recognition?

Which cortical areas beyond S1 integrate texture and shape for object recognition?

• A. S1 for texture.
• B. S2 alone processes texture.
• C. V2 and V4.
• D. S2 and higher areas.

Answer: (D)

Texture and shape integration for object recognition depends on processing beyond the primary somatosensory cortex. S1 handles basic tactile features like local texture and simple pressure, but recognizing an object by touch requires combining those texture cues with the overall 3-D shape. That integration happens in S2, which has larger, more complex receptive fields and can bind texture information with more diverse surface configurations. From there, higher somatosensory association areas build still more abstract representations that support invariant object recognition across different touches and orientations. So the combination of S2 and higher areas is what enables recognizing objects by texture and shape, not S1 alone or visual areas alone.

Texture and shape integration for object recognition depends on processing beyond the primary somatosensory cortex. S1 handles basic tactile features like local texture and simple pressure, but recognizing an object by touch requires combining those texture cues with the overall 3-D shape. That integration happens in S2, which has larger, more complex receptive fields and can bind texture information with more diverse surface configurations. From there, higher somatosensory association areas build still more abstract representations that support invariant object recognition across different touches and orientations. So the combination of S2 and higher areas is what enables recognizing objects by texture and shape, not S1 alone or visual areas alone.