The effect of similarity between elemental stimuli and compounds in olfactory patterning discriminations
The effect of similarity between elemental stimuli and compounds in olfactory patterning discriminations
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DOI：
10.1101/lm.41002
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发表时间：
2002-05-01
影响因子：
2
通讯作者：
Giurfa, M
中科院分区：
文献类型：
--
作者：
Deisig, N;Lachnit, H;Giurfa, M
我们研究了蜜蜂区分单一气味和二元混合气味的能力。我们分析了这两个刺激类别之间的共同成分的数量对嗅觉辨别的影响。我们使用了蜜蜂的鼻子延伸反射(PER)的嗅觉条件反射，在这个范例中，气味可以与蔗糖溶液的强化联系在一起。蜜蜂被要求区分强化的嗅觉刺激和非强化的嗅觉刺激。他们接受了两种基本气味(A和B)的训练，而不是二元嗅觉混合物。混合物为AB(2CE族，两种公共元素)、AC(1CE族，一种公共元素A)或Cd(0CE族，无公共元素)。三组遵循正图案化程序(混合增强和元件非增强：2CE+、1CE+和0CE+组)，以及另外三组负图案化程序(混合非增强和元件增强：组2CE-、1CE-和0CE-)。我们发现，元素气味和化合物之间相似性(共同元素的数量)的减少提高了区分元素和化合物的能力，蜜蜂使用的化合物加工类型支持假设非元素化合物加工的理论(即，排除了化合物呈现时元素结合强度的简单求和)。
We studied the ability of honeybees to discriminate between single odorants and binary olfactory mixtures. We analyzed the effect of the number of common elements between these two stimulus classes on olfactory discrimination. We used olfactory conditioning of the honeybees' proboscis extension reflex (PER), a paradigm in which odors can be associated with a reinforcement of sucrose solution. Bees were asked to discriminate reinforced from nonreinforced olfactory stimuli. They were trained with two elemental odors (A and B) versus a binary olfactory mixture. The mixture was either AB (group 2CE, two common elements), AC (group 1CE, one common element A), or CD (group 0CE, no common element). Three groups followed a positive patterning schedule (mixture reinforced and elements nonreinforced: groups 2CE+, 1CE+, and 0CE+) and three other groups a negative patterning schedule (mixture nonreinforced and elements reinforced: groups 2CE-, 1CE-, and 0CE-). We showed that a reduction of similarity (number of common elements) between elemental odors and compounds enhanced the ability to discriminate elements from compounds and that the kind of compound processing used by the bees supports theories that assume nonelemental compound processing (i.e., that exclude the mere summation of the elemental associative strengths upon compound presentation).