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Fig. 4. (A) Measured amplitude of extracellular receptor potentials (ERPs; circles)
from a neuromast in the supraorbital lateral line of the ruffe. The sphere was
moved along an axis parallel to the lateral line (x-axis) at a
distance d=10 mm. This is referred to as an excitation pattern (see
text). ERPs were fitted with the model given by Eqn 4 (solid line), describing
the measured excitation patterns (b=0.9±0.2 mm;
d'=8.5±0.3 mm;
=9±3°). (B) Phase
of ERPs.