Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/17613
Appears in Collections:Psychology Journal Articles
Peer Review Status: Refereed
Title: Coherent Infomax as a Computational Goal for Neural Systems
Authors: Kay, James W
Phillips, William
Contact Email: w.a.phillips@stir.ac.uk
Keywords: Neural networks
Coherent Infomax
Dynamic coordination
Contextual modulation
Learning rules
Synaptic plasticity
Bayesian analysis
Neural coding
Information theory
Issue Date: Feb-2011
Publisher: Springer
Citation: Kay JW & Phillips W (2011) Coherent Infomax as a Computational Goal for Neural Systems, Bulletin of Mathematical Biology, 73 (2), pp. 344-372.
Abstract: Signal processing in the cerebral cortex is thought to involve a common multi-purpose algorithm embodied in a canonical cortical micro-circuit that is replicated many times over both within and across cortical regions. Operation of this algorithm produces widely distributed but coherent and relevant patterns of activity. The theory of Coherent Infomax provides a formal specification of the objectives of such an algorithm. It also formally derives specifications for both the short-term processing dynamics and for the learning rules whereby the connection strengths between units in the network can be adapted to the environment in which the system finds itself. A central assumption of the theory is that the local processors can combine reliable signal coding with flexible use of those codes because they have two classes of synaptic connection: driving connections which specify the information content of the neural signals, and contextual connections which modulate that signal processing. Here, we make the biological relevance of this theory more explicit by putting more emphasis upon the contextual guidance of ongoing processing, by showing that Coherent Infomax is consistent with a particular Bayesian interpretation for the contextual guidance of learning and processing, by explicitly specifying rules for on-line learning, and by suggesting approximations by which the learning rules can be made computationally feasible within systems composed of very many local processors.
Type: Journal Article
URI: http://hdl.handle.net/1893/17613
DOI Link: http://dx.doi.org/10.1007/s11538-010-9564-x
Rights: The publisher does not allow this work to be made publicly available in this Repository. Please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study.
Affiliation: University of Glasgow
Psychology

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