论文信息 - A model of visual working memory in PFC

A model of visual working memory in PFC

Abstract We present a model of visual working memory in ventral prefrontal cortex. Activation in ventral PFC consists of reverberating activity. Representations in ventral PFC are conjunctions of location and (partial) identity representations. With many objects, representations in ventral PFC interfere, which results in loss of information. Therefore, the number of objects in working memory is limited. However, because ventral PFC is connected to the ‘identity’ levels in the visual cortex, the number of features for each object is unlimited. The ‘blackboard’ architecture of ventral PFC results in a unification (binding) of the feature representations of the objects maintained in memory.

Frank van der Velde | Marc de Kamps

[1] Frank van der Velde,et al. On the use of computation in modelling behaviour , 1997 .

[2] P. Goldman-Rakic,et al. Dissociation of object and spatial processing domains in primate prefrontal cortex. , 1993, Science.

[3] R. O’Reilly,et al. Computational Explorations in Cognitive Neuroscience: Understanding the Mind by Simulating the Brain , 2000 .

[4] Mark D'Esposito,et al. Functional Neuroimaging of Working Memory , 2001 .

[5] Frank van der Velde,et al. Using a recurrent network to bind form, color and position into a unified percept , 2001, Neurocomputing.

[6] R. Cabeza,et al. Handbook of functional neuroimaging of cognition , 2001 .

[7] F. Velde,et al. From Knowing What to Knowing Where: Modeling Object-Based Attention with Feedback Disinhibition of Activation , 2001 .

[8] G. Woodman,et al. Visual Search Remains Efficient when Visual Working Memory is Full , 2001, Psychological science.

[9] G. Woodman,et al. Storage of features, conjunctions and objects in visual working memory. , 2001, Journal of experimental psychology. Human perception and performance.