Headache & Pain
Headache associated with acute substance use or exposure
Nov. 05, 2021
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Photographs taken during implantation of subdural grid and strip electrodes (top). The top left panel shows the brain prior to grid placement, and the top right panel is after grid placement. The bottom panel shows a segment of intracranial EEG recording demonstrating continuous spikes approximately 2 Hz at electrode #46 of the frontal-temporal-parietal grid, highlighted in blue. (Contributed by Dr. Guy M McKhann II.)