Before revision:  We find that brain states are composed of interdigitated functional networks and exhibit context-dependent dynamics . Using diffusion-weighted imaging acquired from the same subjects, we show that structural connectivity constrains the temporal progression of brainstates.
After revision:  We find that specific state space trajectories, which represent temporal sequences of brain activity, are modulated by cognitive load and related to task performance . Using diffusion-weighted imaging acquired from the same subjects, we show that structural connectivity constrains the temporal progression of brainstates.