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Fig. 7. Phase diagrams for frequency responses of primary afferent neurons from
dorsal pored (Dp) and ventral non-pored (Vnp) hyomandibular canals in the
Atlantic stingray, Dasyatis sabina. Dp primary afferents show a low
frequency phase lead of about 180° (acceleration-sensitive), while Vnp
primary afferents show a low frequency phase lead of about 90°
(velocity-sensitive). Phase of the peak neural response is expressed in
degrees (mean ± S.E.M.) relative to
the peak displacement of the sphere. Sample sizes (N) show the number
of animals, number of primary afferents analyzed.