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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Beyond the olfactory bulb: an odotopic map in the forebrain.
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Beyond the olfactory bulb: an odotopic map in the forebrain.

机译:嗅球之外:前脑中的异位图。

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摘要

We report electrophysiological evidence that a simple odotopy, the spatial mapping of different odorants, is maintained above the level of the olfactory bulb (OB). Three classes of biologically relevant odorants for fish are processed in distinct regions of the forebrain (FB) in the channel catfish. Feeding cues, mainly amino acids and nucleotides, are represented in lateral, pallial portions of the FB, equivalent to the olfactory cortex of amniote vertebrates, whereas social signals mediated by bile salts are represented in medial FB centers, possibly homologous to portions of the amygdala. As in the OB, the different odorant classes map onto different territories; however, the response properties of units of the olfactory areas of the FB do not simply mirror those of the OB. For some units, distinctive response properties emerged, because the FB is the first center where odors subserving a common behavioral function (i.e., food function) converge.
机译:我们报告了电生理学证据,一个简单的odotopy,不同气味的空间映射,保持在嗅球(OB)的水平以上。在the鱼的前脑(FB)的不同区域中,加工了三类与鱼类具有生物相关性的增香剂。进食提示,主要是氨基酸和核苷酸,出现在FB的外侧,顶盖部分,相当于羊膜脊椎动物的嗅觉皮层,而胆汁盐介导的社交信号则出现在FB内侧,可能与杏仁核的部分同源。如在OB中一样,不同的气味剂类别映射到不同的区域。但是,FB的嗅觉区域的响应特性不能简单地反映OB的响应特性。对于某些单元,出现了独特的响应特性,因为FB是第一个聚集具有共同行为功能(即食物功能)的气味的中心。

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