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Optic flow neurons correspond with ZII stripes in folium IXcd. ZII-positive PCs are represented as red, whereas ZII-negative PCs are gray and specific zones are indicated from P1+ to P7−. The PCs responsive to contraction (light blue), expansion (purple), ascent (green), descent (orange), rVA (red), and rHA (dark blue) are separated by black dashed lines.
