Editorial: Oscillatory brain activity as a marker of brain function and dysfunction in aging and in neurodegenerative disorders

Neural oscillations support fundamental mechanisms of information processing in neural networks (Buzsáki, 2006; Singer, 2013, 2018). Properties such as phase and amplitude during task performance and at rest map onto cognitive processes and abilities. The articles in this issue discuss the scientific and clinical use of oscillations in neurological populations that exhibit altered cognition. The articles focus on understanding the oscillatory changes associated with healthy aging and progression of neurodegenerative disorders such as Alzheimer's Disease (AD), Mild Cognitive Impairment (MCI) and Parkinson's Disease (PD), and examine how oscillatory activity can inform development of interventions to slow down aging-related cognitive decline. Nine exciting contributions provide novel methods involving oscillatory signals as early indicators of healthy aging, biomarkers of neurodegeneration, and predictors of successful interventions.