Skip to main content
. Author manuscript; available in PMC: 2009 Feb 1.
Published in final edited form as: Neuroimage. 2007 Oct 12;39(3):1198–1214. doi: 10.1016/j.neuroimage.2007.10.003

Figure 2.

Figure 2

The source signal at any i-th location si(t) is not a stationary stochastic process over time, but its values at any give time tj sampled in different epochs are i.i.d. Therefore s(t,k), for 1 ≤ k ≤ Ne, represents an independent observation of a stochastic process s(t) for each individual time t(note that s(t) is a stochastic process with its index sets over source locations).