Research Article

Activation Detection on fMRI Time Series Using Hidden Markov Model

Figure 5

Tumor patient high-resolution image and glass maps for SPM test and 2-state HMM likelihood ratio test. The patient has a tumor on his left frontal lobe from (a). No supplemental voxels from SPM t-test (b). “D” and “F” are supplemental voxels detected from HMM LLR map in (c).
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(a) Tumor patient MRI brain image
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(b) SPM t-test map
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(c) HMM LLR map