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Odor Perception on the Two Sides of the Brain: Consistency Despite Randomness

机译:在大脑两侧的气味感知:尽管随机性,一致性

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摘要

Neurons in piriform cortex receive input from a random collection of glomeruli, resulting in odor representations that lack the stereotypic organization of the olfactory bulb. We have performedin?vivooptical imaging and mathematical modeling to demonstrate that correlations are retained in the transformation from bulb to piriform cortex, a feature essential for generalization across odors. Random connectivity also implies that the piriform representation of a given odor will differ among different individuals and across brain hemispheres in a single individual. We show that these different representations can nevertheless support consistent agreement about odor quality across a range of odors. Our model also demonstrates that, whereas odor discrimination and categorization require far fewer neurons than reside in piriform cortex, consistent generalization may require the full complement of piriform neurons.
机译:粒状皮质中的神经元从肾小球的随机收集接受输入,导致嗅到嗅灯泡的陈规定型组织的气味表示。 我们已经进行了?体内影像成像和数学建模,以证明相关性在从灯泡到痔疮的转化中保留相关性,该特征是横跨气味的泛化。 随机连接还意味着给定的气味的痔疮表示在不同的个体中不同,并且在单个个体中脑脑半球之间不同。 我们表明,这些不同的表示可以支持一致的一系列内含物质的气味。 我们的模型还证明,而异味鉴别和分类需要远更少的神经元,而不是在痔疮皮层中,而一致的概括可能需要满分的粒状神经元。

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