A model of how depth facilitates scene-relative object motion perception
Fig 3
Overview of suppressive feedback mechanism.
MT− and MSTv units are inhibited depending on how their tuning properties relate to the corresponding local subregion of the most active MSTd unit’s RF. (a) The pattern selectivity of the MSTd unit is indicated on the top-right and the RF of some MT units are shown in left superimposed circle. Highest peak curve in plot shows that MT suppression is greatest when the MT direction tuning locally matches (leftward; 0° mismatch) the MSTd RF; units with mismatching direction tuning receive progressively less inhibition. Other curves show that inhibition drops off as speed tuning locally differs from the MSTd RF. (b) MT− and MSTv units receive the most inhibition when they match the congruent speed-disparity tuning of the MSTd unit (circled diagonal). For example, among units with RFs near the FOE, those tuned to slow and far receive more inhibition than those tuned to slow and near.