Exploratory Data Analysis Methods for fMRI - Biomedical Signal Analysis: Contemporary Methods and Applications - page 257

(a) general linear model analysis
(b) one independent component
Figure 8.2
Comparison of model-based and model-free analyses of a word-perception fMRI
experiment. (a) illustrates the result of a regression-based analysis, which shows
activity mostly in the auditory cortex. (b) is a single component extracted by ICA
and corresponds to a word-detection network. See plate 3 for the color version of
this figure.
The regression-based analysis using a general linear model was per-
formed using SPM2. This was compared with components extracted
using ICA, namely fastICA [124].