Contextual and temporal variability in large-scale functional network interactions underlying attention

.................................................................................................................................. ii LAY SUMMARY ......................................................................................................................... iii PREFACE ...................................................................................................................................... iv TABLE OF CONTENTS ................................................................................................................ v LIST OF TABLES ......................................................................................................................... xi LIST OF FIGURES ...................................................................................................................... xii ACKNOWLEDGMENTS ........................................................................................................... xiv CHAPTER 1 INTRODUCTION ............................................................................................... 1 Attention as a multifaceted process ........................................................................................ 2 Non-invasive brain network mapping in humans ................................................................. 5 Temporal and contextual variability in network organization ............................................ 5 Graph theory ............................................................................................................................ 5 Key networks involved in attention ........................................................................................ 6 The dorsal attention network ................................................................................................. 6 The default network ............................................................................................................... 8 The salience networks ........................................................................................................... 9 The frontoparietal control network ...................................................................................... 10 Overview of the current research questions ........................................................................ 12 The relationship between perceptual and conceptual attention networks ........................... 12 The organization of the frontoparietal control network ...................................................... 13 Network configurations during different forms of internal attention .................................. 15 CHAPTER 2 EXPERIMENT 1: INTERACTIONS BETWEEN THE DEFAULT NETWORK AND DORSAL ATTENTION NETWORK VARY ACROSS DEFAULT SUBSYSTEMS, TIME, AND COGNITIVE STATE .............................................................. 17