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Fig. 4. Directional tuning curves for ventral giant interneurons (vGIs) and dorsal
giant interneurons (dGIs). (A) Mean Cartesian tuning curves for interneurons
with axons in the ventral group, with amplitude normalized to maximal firing
rate. The shaded background represents ±1 s.d. across the populations
of specified neurons. Ai: 8-1a (medial giant interneuron, MGI); Aii: 9-1a
(lateral giant interneuron, LGI); Aiii: 9-1b; Aiv: 10-1a. (B) Mean Cartesian
tuning curves for dGIs, grouped into potential functional units (data format
as in A). Bi: 7-2a and 8-2a; Bi: 9-2a and 9-3a; Bi: 10-2a and 10-3a. (C)
Representation of peak directional selectivity of all GIs with unimodal
directional tuning in relation to the cricket. R, right; L, left.