Chunk #45 — 4 Discussion — 4.2 EEG discriminating components during the P3 and around reaction time reveal a period of transition from externally driven task-related to internally-driven processing
1990), this interpretation does not allow speculation regarding particular cortices. An alternative idea for the physiological meaning of this activation is that it reflects a global change in cerebral blood flow. Given the care we took with image registration, pulsation artifact investigation, and multiple comparison correction, and the congruency of our cortical results with the literature, we believe these to be true results that should not be ignored. However, these remain preliminary findings that we are currently validating in new datasets using diffusion tensor imaging and magnetic resonance veinography.
