Spatial smoothing hurts localization but not information: Pitfalls for brain mappers

被引：85

作者：

Kamitani, Yukiyasu ^{[1
]}

Sawahata, Yasuhito ^{[1
]}

机构：

[1] ATR Computat Neurosci Labs, Kethanna Sci City, Kyoto 6190288, Japan

来源：

NEUROIMAGE | 2010年 / 49卷 / 03期

关键词：

D O I：

10.1016/j.neuroimage.2009.06.040

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Op de Beeck (Op de Beeck, H., 2009 Against hyperacuity in brain reading Spatial smoothing does not hurt multivariate fMRI analyses? Neuroimage) challenges the possibility of extracting information from subvoxel representations via random biases associated with voxel sampling. the hypothesis proposed by Kamitani and Tong (Kamitani, Y, Tong, F, 2005 Decoding the Visual and subjective contents of the human brain Nat Neurosci 8, 679-685) Here, we show that his results provide no evidence against the possibility, being consistent with both of the subvoxel and supravoxel representation models. Classification of spatially smoothed fMRI data is not an effective means to probe into information Sources for multivoxel decoding, since smoothing (toes not hurt the Information contents of multivoxel patterns We point Out the danger of interpreting multivoxel decoding results based Oil intuitions guided by the conventional brain mapping paradigm. (C) 2009 Elsevier Inc All rights reserved

引用

页码：1949 / 1952

页数：4