Effect of the small-world structure on encoding performance in the primary visual cortex: an electrophysiological and modeling analysis

Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
Li ShiHong Wan

Abstract

The biological networks have been widely reported to present small-world properties. However, the effects of small-world network structure on population's encoding performance remain poorly understood. To address this issue, we applied a small world-based framework to quantify and analyze the response dynamics of cell assemblies recorded from rat primary visual cortex, and further established a population encoding model based on small world-based generalized linear model (SW-GLM). The electrophysiological experimental results show that the small world-based population responses to different topological shapes present significant variation (t test, p < 0.01; effect size: Hedge's g > 0.8), while no significant variation was found for control networks without considering their spatial connectivity (t test, p > 0.05; effect size: Hedge's g < 0.5). Furthermore, the numerical experimental results show that the predicted response under SW-GLM is more accurate and reliable compared to the control model without small-world structure, and the decoding performance is also improved about 10 % by taking the small-world structure into account. The above results suggest the important role of the small-world neural structure in encoding visual...Continue Reading

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Oct 12, 2016·Journal of Computational Neuroscience·Brandon S CoventryEdward L Bartlett
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