Fig. 5. (A) Responses measured from the left tympanic membrane (black) and from three positions, rostral (orange), middle (red) and caudal (dark brown), on the operculum of a female bullfrog (SVL 133.9 mm). Opercular responses have been adjusted for the response of the parotic crest (not shown) and for velocity component angles of 20°. The inset shows approximate measurement positions on the operculum. (B) Phase lags between the rostral and middle operculum (red) and between the rostral and caudal operculum (black).

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