Some neuro-computational investigations into the reviewing of object-files

TL;DRAbstract

When a person attends to an object, a temporary working memory representation is created for it, specific to that individual “token” object. This differs from more general accumulated memories for “types” of objects. Kahneman, Treisman, and Gibbs (1992) conducted a series of “object-reviewing” studies showing that these token object representations are able to persist after focal attention is withdrawn from an object, and can be reactivated when the same object is reattended to shortly afterwards. Kahneman et al. (1992) used the term “object-files” to refer to these working memory representations. In the years since the publication of these seminal results many subsequent studies have further probed this type of memory. However, the question of the neural mechanisms which implement object-files is still largely an open one. In this thesis I attempt to examine these mechanisms, asking what is required computationally for such memory traces to persist and be reactivated, and how and why the

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