Dimensionality and Degrees of Freedom in fMRI Data Analysis - A Comparative Study

Two- and three-dimensional isotropic and anisotropic spatial filters for adaptive fMRI data analysis are compared in terms of activation detection sensitivity and specificity. Evaluations using both real and artificial data are presented. It is shown that three-dimensional anisotropic filters provide superior activation detection performance.

• Type: Conference
• Year: 2004
• Where: ISBI
• Authors: Joakim Rydell, Magnus Borga, Hans Knutsson, Peter Lundberg
• Keywords: Activation Detection Sensitivity, Anisotropic Spatial Filters, ISBI 2004, Medical Imaging, Three-dimensional Anisotropic Filters