In the current study, we investigate how actions influence the formation of multistate object representations in the MTL, beyond what can be gleaned from passively perceiving state transitions. In particular, different states of the same object are often observed contiguously in time, and such temporal regularities induce changes in how stimuli are represented in perirhinal cortex (PRC) and entorhinal cortex (ERC) ( Miyashita 1988 Wirth et al. Accordingly, such multistate object recognition may depend on associative learning mechanisms in the medial temporal lobe (MTL) ( Cohen and Eichenbaum 1993 Miyashita 1993). However, generalization of identity across multiple states of an object that have little or no overlap in features (e.g., a fresh laid egg, a painted egg, or an omelet) may require learning the dynamic structure of the object (e.g., that a fresh laid egg can become either a painted egg or an omelet).

By way of their invariant tuning properties, high-level areas of the visual system, including inferior temporal cortex and lateral occipital (LO) cortex, may be sufficient for recognizing objects across simple transformations, such as rotated viewpoints or translated locations ( Grill-Spector et al. To recognize and keep track of objects, the identity of each object must be preserved across such differences ( Biederman and Gerhardstein 1993 DiCarlo et al.

Action, medial temporal lobe, object perception, predictive coding, representational similarity Introductionĭifferent visual stimuli can signify the same object at different moments in time, such as an open versus closed umbrella, a book on the table versus shelf, or the front versus side view of a face.

Artmatic pro 4 2006 keygen