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Fig. 3. Topographic innervation of the fin in Sepia officinalis.
Topographic innervation among 1° anterior and posterior fin nerve branches
(A) and 2° anterior nerve branches (B) is shown. Overlapping regions of
chromatophore activity for neighboring nerves were observed at both the 1°
and 2° nerve levels. Colored points on nerve branches represent
stimulation locations, while corresponding colored lines parallel to fin
illustrate the regions of chromatophore activity. Insets highlight the
locations (red boxes) of the enlarged drawings.