Previous reports have shown cue-invariant shape selectivity in infero-temporal neurons of macaques (Sary et al. Science, 1993; Vogels R and Orban GA Prog Br Res, 1996) including static shapes defined by relative motion. We have previously shown that even dorsal V4 neurons reflect this kind of cue-invariant form processing (Mysore SG et al. SFN abstr, 2003). Since moving kinetic boundaries are a more natural stimulus, the current study explored selectivity for luminance or motion-defined shapes when the shape boundary was either static or moving. We used a factorial design where the cues defining the 5 test shapes consisted of luminance, or pixel motion inside the shape boundary (factor 1). Shapes themselves were either static or moving (factor 2). Additionally, we included a 5th set of static shapes as in our previous experiment (Mysore SG et al . SFN abstr, 2003) defined by pixel motion in opposite directions on either side of the boundary, to compare shape selectivity across cues. We recorded from 96 sin...