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Review
. 2014 Apr:25:176-86.
doi: 10.1016/j.conb.2014.01.014. Epub 2014 Feb 16.

Algorithms of whisker-mediated touch perception

Affiliations
Review

Algorithms of whisker-mediated touch perception

Miguel Maravall et al. Curr Opin Neurobiol. 2014 Apr.

Abstract

Comparison of the functional organization of sensory modalities can reveal the specialized mechanisms unique to each modality as well as processing algorithms that are common across modalities. Here we examine the rodent whisker system. The whisker's mechanical properties shape the forces transmitted to specialized receptors. The sensory and motor systems are intimately interconnected, giving rise to two forms of sensation: generative and receptive. The sensory pathway is a test bed for fundamental concepts in computation and coding: hierarchical feature detection, sparseness, adaptive representations, and population coding. The central processing of signals can be considered a sequence of filters. At the level of cortex, neurons represent object features by a coordinated population code which encompasses cells with heterogeneous properties.

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