From the primary visual cortex, what are the two streams of visual processing?

From the primary visual cortex, what are the two streams of visual processing?

• A. One stream goes to the frontal lobe and the other to the occipital lobe.
• B. Both streams project to the frontal lobe.
• C. One stream projects to the parietal lobe and the other to the temporal lobe.
• D. There are more than two streams to various lobes.

Answer: (C)

Two distinct processing streams carry information from the primary visual cortex: a dorsal stream projecting to the parietal lobe and a ventral stream projecting to the temporal lobe. The dorsal stream, the “where/how” pathway, analyzes spatial location, motion, and spatial relationships to guide actions. The ventral stream, the “what” pathway, analyzes form, color, and detail to recognize objects. This arrangement lets the brain determine what an object is and where it is in space simultaneously. The other options don’t fit because the main split is between parietal and temporal destinations, not the frontal or occipital lobes, and it’s not described as more than two distinct streams.

Two distinct processing streams carry information from the primary visual cortex: a dorsal stream projecting to the parietal lobe and a ventral stream projecting to the temporal lobe. The dorsal stream, the “where/how” pathway, analyzes spatial location, motion, and spatial relationships to guide actions. The ventral stream, the “what” pathway, analyzes form, color, and detail to recognize objects. This arrangement lets the brain determine what an object is and where it is in space simultaneously. The other options don’t fit because the main split is between parietal and temporal destinations, not the frontal or occipital lobes, and it’s not described as more than two distinct streams.