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Early transformations in odor representation
DOI:10.1016/j.tins.2009.12.004.png)
Abstract
En 中文
Sensory representations are repeatedly transformed by neural computations that determine which of their attributes can be effectively processed at each stage. Whereas some early computations are common across multiple sensory systems, they can utilize dissimilar underlying mechanisms depending on the properties of each modality. Recent work in the olfactory bulb has substantially clarified the neural algorithms underlying early odor processing. The high-dimensionality of odor space strictly limits the utility of topographical representations, forcing similarity-dependent computations such as decorrelation to employ unusual neural algorithms. The distinct architectures and properties of the two prominent computational layers in the olfactory bulb suggest that the bulb is directly comparable not only to the retina but also to primary visual cortex.
Keywords:
ACTION-POTENTIAL PROPAGATION
CENTER-SURROUND INHIBITION
EXTERNAL TUFTED CELLS
OLFACTORY-BULB
RESPONSE PROPERTIES
PRESYNAPTIC INHIBITION
LATERAL INHIBITION
RAT
RECEPTOR
NEURONS
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