Long Range Temporal Correlations in EEG and Depression

The relationship between Long Range Temporal Correlations (LRTC) from EEG oscillations and depression or depression-related emotion regulation strategies has been a focus of interest in the last few years and its demonstration through Detrended Fluctuation Analysis (DFA) has been determined by several authors. Despite this, a wide range of methods and procedures have been used to obtain these measures, leading to a large amount of hardly comparable results. In this review we summarize the main outcomes and find that there are consistencies between these studies, but also many inconsistencies that make obvious the need of a unified line of investigation. We also propose some suggestions for the future in order to improve our knowledge about LRTC and depression.