The effect of spatial smoothing on fMRI decoding of columnar-level organization with linear support vector machine

• Published in: Journal of neuroscience methods Vol. 212; no. 2; pp. 355 - 361
• Main Authors: Misaki, Masaya, Luh, Wen-Ming, Bandettini, Peter A.
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 30.01.2013
• Subjects: Adult; Brain - physiology; Brain Mapping - methods; Columnar-level decoding; Computer Simulation; Female; Humans; Image Interpretation, Computer-Assisted - methods; Informative spatial frequency; Linear Models; Magnetic Resonance Imaging - methods; Male; Multivoxel pattern analysis; Support Vector Machine; Young Adult; Support vector machine; Informative spatial frequency; Multivoxel pattern analysis; Columnar-level decoding

► We examine the effect of smoothing on multivoxel pattern analysis. ► Non-uniform data scaling across dimensions changes results of SVM classification. ► The effect of smoothing on SVM decoding was related to informative frequency. ► Large smoothing reduced decoding accuracy on average across subje...