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Pre- and post-stimulatory gastric electromyography (EMG) signals recorded with a hook needle electrode. (A) Figure exemplifies raw and 30 Hz highpass filtered signals of a gastric hook needle electrode with a recording length of 3 minutes before electrical stimulation (ES) is applied. (B) Figure shows examples of EMG raw and 30 Hz highpass filtered signals of a gastric hook needle electrode with a recording length of 3 minutes after 30 seconds ES was performed.
