Fig. 1. Diagram of the foregut preparation. BD, buccal dilator; BC, buccal constrictor; ED, esophageal dilator; aEC, anterior esophageal constrictor; pEC, posterior esophageal constrictor; FN, frontal nerve; FG, frontal ganglion; RN, recurrent nerve. Examples of suction electrode and movement transducer placements are illustrated in red. Note that the muscles have been cut from their cuticular attachments and that the branching patterns of the nerves have been omitted from the drawing. Scale bar, 500 µm.