Amnesic patients show superior generalization in category learning.
Amnesic patients show superior generalization in category learning.
复制标题
健忘症患者在类别学习中表现出优异的概括能力。
DOI：
10.1037/neu0000301
复制
发表时间：
2016
期刊：
影响因子：
2.4
通讯作者：
Wills,AndyJ
中科院分区：
文献类型：
--
作者：
O'Connell,Garret;Myers,CatherineE;Hopkins,RamonaO;McLaren,RP;Gluck,MarkA;Wills,AndyJ
概括是将现有知识应用于新的情况。问题仍然是海马体在这方面的学习的确切作用，但由Gluck和Myers（1993年）的联结模型预测，概括应加强以下海马damage.MethodIn两类学习任务，一组健忘症患者（n= 9）学习的训练项目的准确性相匹配的控制（n= 9）。两组，然后分类新的项目在不同程度的distortion.ResultsThe健忘症组表现出显着更准确的概括高失真的新项目，差异也存在相比，一个更大的一组不匹配的control（n= 33）.ConclusionsThe模型预测的扩大泛化梯度健忘症，至少在类别边界附近的项目，支持的结果。我们的研究首次表明，健忘症有时可以提高概括能力。
ObjectiveGeneralization is the application of existing knowledge to novel situations. Questions remain about the precise role of the hippocampus in this facet of learning, but a connectionist model by Gluck and Myers (1993) predicts that generalization should be enhanced following hippocampal damage.MethodIn a two-category learning task, a group of amnesic patients (n= 9) learned the training items to a similar level of accuracy as matched controls (n= 9). Both groups then classified new items at various levels of distortion.ResultsThe amnesic group showed significantly more accurate generalization to high-distortion novel items, a difference also present compared to a larger group of unmatched controls (n= 33).ConclusionsThe model prediction of a broadening of generalization gradients in amnesia, at least for items near category boundaries, was supported by the results. Our study shows for the first time that amnesia can sometimes improve generalization.