Olfactory blocking and odorant similarity in the honeybee
Olfactory blocking and odorant similarity in the honeybee
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DOI：
10.1101/lm.79305
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发表时间：
2005-03-01
影响因子：
2
通讯作者：
Giurfa, M
中科院分区：
文献类型：
--
作者：
Guerrieri, F;Lachnit, H;Giurfa, M
当A和B在复合中训练时，当先前使用刺激A进行训练时，阻止学习减少（阻止）关于刺激B的后续学习。蜜蜂的鼻伸展反射（PER）的嗅觉条件反射是否存在阻断的问题一直存在争议。最新发表的关于蜜蜂中的阻断的报道指出，当气味A和B相似时，阻断是不可能的（“相似性假设”）。我们已经测试了这一假设，使用四种气味（1-辛醇，1-壬醇，丁香酚和柠檬烯）选择油的基础上，他们的化学和生理相似性（实验1）。我们建立了一个泛化矩阵，衡量感知相似性。在“块组”中的蜜蜂首先用气味A训练，在第二阶段，用混合物AB训练。在“新组”（对照组）中的蜜蜂首先用气味N训练，在第二阶段，用混合物AB训练。在适应后，测试两组蜜蜂对B的反应。我们分析了代表A、B和N的四种气味的所有24种可能的组合。我们发现在4个案例中的阻塞，在2个案例中的增强，并没有在18例差异;气味相似性不能解释这些结果。我们还重复了这六种气味组合的实验，这些气味组合引起了相似性假设（实验2：I-己醇，I-辛醇，香叶醇），并发现在一种情况下增强，在五种情况下没有效果。因此，阻塞不是一种一致的现象，也不依赖于油的气味相似性。
Blocking Occurs when previous training with a Stimulus A reduces (blocks) Subsequent learning about a stimulus B, when A and B are trained in Compound. The question of whether blocking exists in olfactory conditioning of proboscis extension reflex (PER) in honeybees is under debate. The last published accounts on blocking in honeybees state that blocking Occurs when odors A and B are similar (the "similarity hypothesis"). We have tested this hypothesis using four odors (1-octanol, 1-nonanol, eugenol, and limonene) chosen oil the basis of their chemical and physiological similarity (experiment 1). We established a generalization matrix that measured perceptual similarity. Bees in the "block group" were first trained with an odor A and, in the second phase, with the mixture AB. Bees in the "novel group" (control group) were first trained with an odor N and, in the second phase, with the mixture AB. After conditioning, bees in both groups were tested for their response to B. We assayed all 24 possible combinations for the four odors standing for A, B, and N. We found blocking in four cases, augmentation in two cases, and no difference in 18 cases; odor similarity could not account for these results. We also repeated the experiments with those six odor combinations that gave rise to the similarity hypothesis (experiment 2: I-hexanol, I-octanol, geraniol) and found augmentation in one and no effect in five cases. Thus, blocking is not a consistent phenomenon, nor does it depend oil odor similarity.