Kriegeskorte Nikolaus, Lindquist Martin A, Nichols Thomas E, Poldrack Russell A, Vul Edward
MRC Cognition and Brain Sciences Unit, Cambridge, UK.
J Cereb Blood Flow Metab. 2010 Sep;30(9):1551-7. doi: 10.1038/jcbfm.2010.86. Epub 2010 Jun 23.
Over the past year, a heated discussion about 'circular' or 'nonindependent' analysis in brain imaging has emerged in the literature. An analysis is circular (or nonindependent) if it is based on data that were selected for showing the effect of interest or a related effect. The authors of this paper are researchers who have contributed to the discussion and span a range of viewpoints. To clarify points of agreement and disagreement in the community, we collaboratively assembled a series of questions on circularity herein, to which we provide our individual current answers in <or=100 words per question. Although divergent views remain on some of the questions, there is also a substantial convergence of opinion, which we have summarized in a consensus box. The box provides the best current answers that the five authors could agree upon.
在过去一年里,文献中出现了关于脑成像中“循环”或“非独立”分析的激烈讨论。如果一种分析是基于为显示感兴趣的效应或相关效应而选择的数据,那么它就是循环的(或非独立的)。本文的作者是参与了该讨论且持有一系列观点的研究人员。为了厘清该领域的共识和分歧点,我们在此共同整理了一系列关于循环性的问题,并针对每个问题给出我们个人目前不超过100字的答案。尽管在一些问题上仍存在不同观点,但也有相当多的意见趋同之处,我们已将其总结在一个共识框中。该框提供了五位作者目前能够达成一致的最佳答案。