Hierarchical processing of complex motion along the primate dorsal visual pathway.

ABSTRACT: Neurons in the medial superior temporal (MST) area of the primate visual cortex respond selectively to complex motion patterns defined by expansion, rotation, and deformation. Consequently they are often hypothesized to be involved in important behavioral functions, such as encoding the velocities of moving objects and surfaces relative to the observer. However, the computations underlying such selectivity are unknown. In this work we have developed a unique, naturalistic motion stimulus and used it to probe the complex selectivity of MST neurons. The resulting data were then used to estimate the properties of the feed-forward inputs to each neuron. This analysis yielded models that successfully accounted for much of the observed stimulus selectivity, provided that the inputs were combined

SUBMITTER: Mineault PJ 

PROVIDER: S-EPMC3341052 | biostudies-literature | 2012 Apr

REPOSITORIES: biostudies-literature