G-autonomy of EEG recordings of psychotic patients undergoing the primitive expression form of dance therapy

Abstract

Abstract. Primitive expression (PE) is a form of dance therapy (DT) that involves an interaction of ethologically and socially based forms which are supplied for re-enactment. Brain connectivity has been measured in electroencephalographic (EEG) data of patients with schizophrenia undergoing PE DT, using the correlation coefficient and mutual information. These parameters do not measure the existence or absence of directionality in the connectivity. The present study investigates the use of the G-autonomy measure of EEG electrode voltages of the same group of schizophrenic patients. G-autonomy is a measure of the "autonomy" of a system. It indicates the degree by which prediction of the system's future evolution is enhanced by taking into account its own past states, in comparison to predictions based on past states of a set of external variables. In the present research, "own" past states refer to voltage values in the time series recorded at a specific electrode and "external" variables refer to the voltage values recorded at other electrodes. Indication is provided for an acute effect of early-stage PE DT expressed by the augmentation of G-autonomy in the delta rhythm and an acute effect of latestage PE DT expressed by the reduction of G-autonomy in the theta and alpha rhythms.

The State of Music-Based Interventions for Mental Illness: Thought Leaders on Barriers, Opportunities, and the Value of Interdisciplinarity

“…Since the mid-twentieth century, studies regarding music's effects on mental health have steadily accumulated across multiple disciplines, with a substantial increase over the last 15 years (Golden et al 2021). Hundreds of publications now point to a growing, multidisciplinary interest in the utilization and study of music as a support for mental health, emerging from fields such as psychology (McFerran et al 2018;Pezzin et al 2018), music therapy (Gold et al 2006;Moe, 2002), neurology (Tan et al 2016;Ventouras et al 2015); nursing (Pölkki et al 2012;McAffrey and Locsin 2002), and psychiatry (Grasser et al 2019;Grocke et al 2008), among many others. Study settings range from community-based programs for mood elevation or stress reduction to clinical interventions designed to treat serious mental illness (SMI).…”