Table 2.

Best frequency of lateral line primary afferent neurons that innervate neuromasts in the dorsal pored (Dp), ventral pored (Vp) and ventral non-pored (Vnp) hyomandibular canals of the stingray relative to displacement, velocity and acceleration

Dp (8, 40)Vp (3, 9)Vnp (6, 28)
Displacement70, 80, 10050, 80, 127.540, 50, 80
Mean ± s.e.m.84.5±4.385.6±14.860.7±4.9
Velocity30, 30, 4030, 40, 655, 7.5, 10
Mean ± s.e.m.34.5±2.548.9±7.98.6±1.3
Acceleration10, 20, 305, 20, 301, 3, 10
Mean ± s.e.m.21.7±1.718.3±4.35.5±1.2
  • Best frequencies (Hz) for units in each category were not normally distributed, thus statistics are expressed as 25%, median, 75% quartiles and mean ± s.e.m. The total number of animals, total number afferents sampled from each canal subsystem are indicated in parentheses.