Journal
NEURAL COMPUTATION
Volume 23, Issue 6, Pages 1536-1567Publisher
MIT PRESS
DOI: 10.1162/NECO_a_00130
Keywords
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Funding
- EPSRC [EP/D062225/1]
- Engineering and Physical Sciences Research Council [EP/D062225/1] Funding Source: researchfish
- EPSRC [EP/D062225/1] Funding Source: UKRI
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The combination of two or more population-coded signals in a neural model of predictive coding can give rise to multiplicative gain modulation in the response properties of individual neurons. Synaptic weights generating these multiplicative response properties can be learned using an unsupervised, Hebbian learning rule. The behavior of the model is compared to empirical data on gaze-dependent gain modulation of cortical cells and found to be in good agreement with a range of physiological observations. Furthermore, it is demonstrated that the model can learn to represent a set of basis functions. This letter thus connects an often-observed neurophysiological phenomenon and important neurocomputational principle (gain modulation) with an influential theory of brain operation (predictive coding).
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