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Common reasons for a false positive (FP) or false negative (FN) annotation on Sensor Dot. (A) Chewing artifact, characterized by 2‐Hz slow waves with superimposed muscle artifacts, which were often mistaken for seizures (FPs). (B, C) Commonly missed absences due to the presence of chewing artifacts (B) and muscle artifacts (C). A high‐pass filter of .53 Hz, a low‐pass filter of 35 Hz, and a notch filter were applied. Sensitivity: 100 µV/cm. Time base: 10 s. Ch1#1, left; Ch2#1, right
