Question

what might happen to the somatosensory cortex of a person who has a foot amputated? click the blue words to correct the following statements. before the persons foot is amputated, it sends signals to the somatosensory cortex. but after the foot is amputated, the somatosensory cortex does not receive signals from the foot. when this happens, the somatosensory cortex can change in a way that may cause phantom pain. when a body part is amputated, it stops sending signals to the somatosensory cortex. when this happens, the somatosensory cortex itself can change. some scientists think that these changes in the somatosensory cortex create new types of signals in the brain. the scientists hypothesize that the brain interprets these signals as phantom pain in the body part that has been amputated.

Explanation:

The original statement incorrectly claims the foot sends signals to the somatosensory cortex before amputation (the somatosensory cortex receives signals from the foot, not the other way around) and that the cortex does not receive signals after amputation (the cortex itself changes, and new brain signals lead to phantom pain). The corrected statements align with the provided text about amputation and phantom pain mechanisms.

Answer:

Before the person's foot is amputated, it sends signals to the somatosensory cortex. But after the foot is amputated, the somatosensory cortex does not receive signals from the foot. When this happens, the somatosensory cortex can change in a way that may cause phantom pain.

Corrected version:
Before the person's foot is amputated, it sends signals to the somatosensory cortex. But after the foot is amputated, the somatosensory cortex loses its source of signals from the foot, and the cortex itself changes, creating new brain signals that are interpreted as signals from the (amputated) foot. When this happens, the somatosensory cortex can change in a way that may cause phantom pain.

Simplified corrected statements (matching the required word swap):

1. Before the person's foot is amputated, it sends signals to the somatosensory cortex.
2. But after the foot is amputated, the somatosensory cortex receives abnormal, internally-generated signals (instead of "does not receive signals from the foot").

The key corrected blue words:

• Replace "does not receive" with "receives abnormal, internal"
• (Or, more aligned with the text: the core correction is that after amputation, the somatosensory cortex changes and generates new signals, so the false claim "does not receive signals" is corrected to "begins to process new internal signals that it interprets as coming from the amputated foot")