Figure 4.

An example of design matrix X. The first peak delay was set as τ_p = 6 s and “Time” indicates the row number of samples. The first to third columns indicate the canonical HRF f(τ_p, t), the derivatives, and the second derivatives, respectively, for site 1. The fourth to sixth columns indicate the canonical HRF f(τ_p, t), the derivatives, and the second derivatives, respectively, for site 2. The seventh to ninth columns indicate the canonical HRF f(τ_p, t), the derivatives, and the second derivatives, respectively, for site 3. The tenth to twelfth columns indicate the canonical HRF f(τ_p, t), the derivatives, and the second derivatives, respectively, for Rest. The thirteenth column indicates the constant.