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CBN (Computational Biology and Neurocomputing) seminars

Synchronizing neurons by a modulator group

by Toomas Kirt (CB/CSC/KTH and Laboratory of Cognitive Psychology at the University of Tartu)

RB35 ()


Simultaneous oscillation of neuron groups could provide solution to the binding problem. It is proposed that distant cortical groups are synchronized by reciprocal interactions with thalamic neurons. Thalamus provides two functions, one is relying specific information and other is non-specific and related to a general purpose process that could be responsible for conscious awareness of stimuli. The perceptual retouch theory emphasizes the importance of the non-specific nuclei of thalamus in information processing and synchronizing the activity of distant cortical regions. In my presentation I present a model how synchronous activity can be achieved and what might be its impact on information processing in the brain. The aim of the simulation is to mimic the natural role of the non-specific modulation in synchronizing of distant cortical areas representing different features of an object. The results indicate that the modulation increases probability that the features get synchronized.