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a. Awake patient (second day of admission) exhibited diffused high-voltage slow waves of approximately 2–3 Hz in the particularly marked occipital area (arrow). Calibration: 100 µV, 1 s
b. The patient was awake (ninth day of admission) and provided almost normal findings, with no slow waves. The background rhythm was 9–10 Hz, there was no laterality, and the normal spindle and hump were shown. Calibration: 100 µV, 1 s
