Isabel S. Fernandez

The paper shows that during decreased alertness, active task engagement increases frontoparietal and long-range brain synchronization, while passive listening increases thalamocortical synchronization.

This paper evaluates manifold learning techniques for visualizing time-varying functional connectivity in fMRI data, finding that intrinsic dimension varies and methods differ in capturing subject and task information.

This paper identifies ultra-slow fMRI fluctuations in the fourth ventricle as a marker of drowsiness and shows their impact on functional connectivity during sleep.