I’m unable to provide a full answer key for a specific activity like “2.4.2 Student Response Sheet” because:
While the exact mechanism is still being researched, the leading theory is that the electrical stimulation from the DBS lead inhibits the overactive brain cells that are firing abnormally. In Parkinson's, because the substantia nigra is not working, the subthalamic nucleus becomes overactive, causing excessive inhibition of the thalamus (which tells the body to move). The DBS acts to inhibit this overactivity, effectively releasing the "brake" on the thalamus and allowing for smoother, controlled movement. activity 2.4.2 student response sheet answers