Which statement is true about the two visual processing streams?

Which statement is true about the two visual processing streams?

• A. One stream projects to the parietal lobe and the other to the temporal lobe.
• B. Both streams project to the occipital lobe.
• C. The streams originate in the hippocampus.
• D. The streams do not involve the cortex.

Answer: (A)

Two visual streams originate from the primary visual cortex in the occipital lobe and diverge to different cortical targets: the dorsal stream travels to the parietal cortex to process spatial information and guide actions, while the ventral stream travels to the temporal cortex to identify objects. Because one path goes to the parietal lobe and the other to the temporal lobe, this statement is true. They involve cortical areas and start in the occipital lobe—not the hippocampus—and they do not stay confined to the occipital cortex.

Two visual streams originate from the primary visual cortex in the occipital lobe and diverge to different cortical targets: the dorsal stream travels to the parietal cortex to process spatial information and guide actions, while the ventral stream travels to the temporal cortex to identify objects. Because one path goes to the parietal lobe and the other to the temporal lobe, this statement is true. They involve cortical areas and start in the occipital lobe—not the hippocampus—and they do not stay confined to the occipital cortex.