Hippocampal Representational Organization and Spatial Context

Hippocampal representational organization and spatial context.

The hippocampus appears to undergo continual representational reorganization as animals navigate their environments. This reorganization is postulated to be reflected spatially in terms of changes in the ensemble of place cells activated, as well as changes in place field specificity and reliability for cells recorded in both hilar/CA3 and CA1 regions. The specific contribution of the hilar/CA3...

Hierarchical organization of context in the hippocampal episodic code

The hippocampal system appears to be critically important in establishing episodic memory of both internal and external events within contexts as well as spatial memory, which enables flexible spatial navigation. However, the neuronal substrates that function across different memories in the hippocampal system are poorly understood. I monitored large-scale activity patterns of hippocampal neuro...

Context-Free Representational Underspecification for NLG

Efficient visual system processing of spatial and luminance statistics in representational and non-representational art

An emerging body of research suggests that artists consistently seek modes of representation that are efficiently processed by the human visual system, and that these shared properties could leave statistical signatures. In earlier work, we showed evidence that perceived similarity of representational art could be predicted using intensity statistics to which the early visual system is attuned,...

Task context and organization 1 Running head: TASK CONTEXT AND ORGANIZATION Task context and organization in free recall

Prior work on organization in free recall has focused on the ways in which semantic and temporal information determine the order in which material is retrieved from memory. Tulving’s theory of ecphory suggests that these organizational effects arise during the recall process, through the interaction of a retrieval cue with the contents of memory. Using the continual-distraction free-recall para...