Analysis of the Movement-Inducing Effects of Music through the Fractality of Head Sway during Standstill

Abstract

The links between music and human movement have been shown to provide insight into crucial aspects of human’s perception, cognition, and sensorimotor systems. In this study, we examined the influence of music on movement during standstill, aiming at further characterizing the correspondences between movement, music, and perception, by analyzing head sway fractality. Eighty seven participants were asked to stand as still as possible for 500?seconds while being presented with alternating silence and audio stimuli. The audio stimuli were all rhythmic in nature, ranging from a metronome track to complex electronic dance music. The head position of each participant was captured with an optical motion capture system. Long-range correlations of head movement were estimated by detrended fluctuation analysis (DFA). Results agree with previous work on the movement-inducing effect of music, showing significantly greater head sway and lower head sway fractality during the music stimuli. In addition, patterns across stimuli suggest a two-way adaptation process to the effects of music, with musical stimuli influencing head sway while at the same time fractality modulated movement responses. Results indicate that fluctuations in head movement in both conditions exhibit long-range correlations, suggesting that the effects of music on head movement depended not only on the value of the most recent measured intervals, but also on the values of those intervals at distant times.     

Computer complexes

By Judirh Duerk. San Diego: Lura Media, 1989.     

An Open Pilot Feasibility Study of a Brief Dialectical Behavior Therapy Skills–Based Intervention for Suicidal Individuals

This open trial sought to develop and evaluate the preliminary feasibility and effectiveness of a brief, one‐time, dialectical behavior therapy skills–based intervention with specific focus on ensuring acceptability to nontreatment‐seekers. Treatment‐seeking and nontreatment‐seeking suicidal individuals were recruited successfully from the community. Both groups found the intervention valuable. Suicide ideation was significantly lower at the 1‐month follow‐up, while use of the specific skills taught in the intervention increased significantly across time points. These results suggest that the intervention is both acceptable to the target population and that it has potential effectiveness as an intervention for individuals experiencing suicidal ideation.