Could information theory provide an ecological theory of sensory processing? - PubMed (original) (raw)
Review
Could information theory provide an ecological theory of sensory processing?
Joseph J Atick. Network. 2011.
Abstract
The sensory pathways of animals are well adapted to processing a special class of signals, namely stimuli from the animal's environment. An important fact about natural stimuli is that they are typically very redundant and hence the sampled representation of these signals formed by the array of sensory cells is inefficient. One could argue for some animals and pathways, as we do in this review, that efficiency of information representation in the nervous system has several evolutionary advantages. Consequently, one might expect that much of the processing in the early levels of these sensory pathways could be dedicated towards recoding incoming signals into a more efficient form. In this review, we explore the principle of efficiency of information representation as a design principle for sensory processing. We give a preliminary discussion on how this principle could be applied in general to predict neural processing and then discuss concretely some neural systems where it recently has been shown to be successful. In particular, we examine the fly's LMC coding strategy and the mammalian retinal coding in the spatial, temporal and chromatic domains.
Comment in
- Closing the loop between neuroscience and information technology: a possible mission?
Leibold C. Leibold C. Network. 2011;22(1-4):1-3. doi: 10.3109/0954898X.2011.636861. Network. 2011. PMID: 22149668 No abstract available.
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