Staying Together: A Bidirectional Delay-Coupled Approach to Joint Action.

Staying Together: A Bidirectional Delay-Coupled Approach to Joint Action.
Cogn Sci. 2019 Aug;43(8):e12766
Authors: Demos AP, Layeghi H, Wanderley MM, Palmer C
Abstract
To understand how individuals adapt to and anticipate each other in joint tasks, we employ a bidirectional delay-coupled dynamical system that allows for mutual adaptation and anticipation. In delay-coupled systems, anticipation is achieved when one system compares its own time-delayed behavior, which implicitly includes past information about the other system's behavior, with the other system's instantaneous behavior. Applied to joint music performance, the model allows each system to adapt its behavior to the dynamics of the other. Model predictions of asynchrony between two simultaneously produced musical voices were compared with duet pianists' behavior; each partner performed one voice while auditory feedback perturbations occurred at unpredictable times during live performance. As the model predicted, when auditory feedback from one musical voice was removed, the asynchrony changed: The pianist's voice that was removed anticipated (preceded) the actions of their partner. When the auditory feedback returned and both musicians could hear each other, they rapidly returned to baseline levels of asynchrony. To understand how the pianists anticipated each other, their performances were fitted by the model to examine change in model parameters (coupling strength, time-d...

Source: Cognitive Science - July 31, 2019 Category: Neuroscience Authors: Demos AP, Layeghi H, Wanderley MM, Palmer C Tags: Cogn Sci Source Type: research