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Figure 3 | BMC Medical Imaging

Figure 3

From: Data-driven haemodynamic response function extraction using Fourier-wavelet regularised deconvolution

Figure 3

Test set-up. (a) The fMRI response as an LTI signal: HRF (i), stimulus pattern (ii), and the activation signal (iii) as (i) convolved with (ii). (b) In the GLM, confounds such as trends (ii) and noise (iii) are added to the response (i). (c) The total response: activation signal + confounds + noise. (d) The ForWaRD-reconstructed HRF (i) compared to the original (ii). (e) The activation signal using the extracted (i) and original (ii) HRF. (f) The canonical HRF, HRFspm, see Eq. (6).

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BMC Medical Imaging

ISSN: 1471-2342

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