Left hemifield neglect is most closely associated with damage to which brain region?

Left hemifield neglect is most closely associated with damage to which brain region?

• A. Right parietal lobe
• B. Left parietal lobe
• C. Occipital lobe
• D. Frontal lobe

Answer: (A)

Left hemifield neglect arises from disruption of spatial attention networks, which are centered in the parietal lobe. The right parietal lobe is especially important for directing attention to the left side of space, so when this area is damaged, a person may ignore or fail to notice things on the left, despite intact vision and sensation. This is why neglect of the left field is most closely tied to injury in the right parietal region. Damage to the left parietal lobe can cause right-sided neglect, but the right hemisphere more strongly drives attention to both sides, so left neglect is more characteristic. The occipital lobe mainly processes visual input, so its damage tends to cause visual field defects rather than a primary attention deficit, while the frontal lobe can affect exploration but is not the primary site for classic left neglect.

Left hemifield neglect arises from disruption of spatial attention networks, which are centered in the parietal lobe. The right parietal lobe is especially important for directing attention to the left side of space, so when this area is damaged, a person may ignore or fail to notice things on the left, despite intact vision and sensation. This is why neglect of the left field is most closely tied to injury in the right parietal region. Damage to the left parietal lobe can cause right-sided neglect, but the right hemisphere more strongly drives attention to both sides, so left neglect is more characteristic. The occipital lobe mainly processes visual input, so its damage tends to cause visual field defects rather than a primary attention deficit, while the frontal lobe can affect exploration but is not the primary site for classic left neglect.