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Conférences

le (1h2m40s)

Brain to Brain approaches to joint actions

Joint actions require an ability to understand and predict the actions of others far enough into the future to have time to plan and execute matching motor programs. Here I will review experiments in which we have tracked information flow from one brain to another to show that the motor system seems to play a key role in these functions. I will embed this experimental data in a Hebbian learning model, which posits that predictions are the result of synaptic plasticity during self­observation. Jointly this talk will aim to trigger thoughts on how we can ...
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Conférences

le (43m11s)

Improvising Interaction

Even the most tightly scripted solo performances involve improvisation; the detailed execution of each note or word cannot be completely determined in advance. In joint performances the challenge of co­ordinating the actions of multiple people in real­time becomes even more complex. One response to this challenge has involved appeal to prediction using ‘forward models’ from computational models of action planning. These models involve automatic activation of motor representations of the future perceptual consequences of an unfolding action. Although normally associated with action production, if a person perceiving the action can also produce a forward ...
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Conférences

le (15m29s)

“Quantifying JI” Short talk 1.1: Saul Albert - Extemporary movement: an interactional account of partner dance improvisation

Clear empirical distinctions can be drawn between joint improvisation and choreography in dance by exploring the rhythmical coordination of dancers and audience members in a partner dance performance. Novice dancers typically learn footwork patterns or ’basics’ that help them move in time to music together. Experts’ familiarity with basics, as well as conventional variations and set­piece moves form a set of compositional structures that can be linked together to fit complimentary rhythmical patterns in music on the fly. In a ’social dance’ performance such as the Lindy hop, (an African American vernacular jazz dance from ...
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Conférences

le (15m44s)

“Quantifying JI” Short talk 1.2: Tommi Himberg - Mirroring improvised hand movements in a dyad

We studied coordination and movement kinematics in a mirror game. 32 participants (18 f, 14 m; mean age 25.2 years, range 19–37) performed circle­drawing and freely improvised hand movement mirroring tasks in dyads. The participants were standing face­to­face, right index fingers pointed at each other, fingertips 10–15 cm apart. In turn, one of the participants was appointed the leader, or the dyad was instructed to share leadership. Hand movements were recorded using an optical motion capture system. Joint leadership resulted in smoother performances than the leader–follower condition; the follower participant would often hesitate or ...
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Conférences

le (14m37s)

“Quantifying JI” Short talk 1.3: Ashley Walton - Musical Improvisation: Spatiotemporal patterns of coordination

When jazz musicians perform an improvisational piece of music their behaviors are not fully prescribed in advance. Nonetheless their actions become so tightly coordinated and their decisions so seamlessly intertwined that the musicians behave as a single synergistic unit rather than a collection of individuals. A fundamental aspect of such musical improvisation is the bodily movement coordination that occurs among the performing musicians, with the embodied interaction of musicians both supporting and constraining musical creativity. Here we consider the ability of pairs of piano players to improvise, to spontaneously coordinate their actions with co­performers. ...
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Conférences

le (40m23s)

Joint Improvisation in Music and Dance: Some Preliminary Phenomenological Considerations on Improvisation as an Enactive Process

"I have been a practitioner of soloandjointimprovisationin music and dance for a while. And I have alwayswondered what the main differences were between the two. What I am particularly interested in are the typeof experiences that allow me to cognitively function in a different way, that is, that allow me to explore new(cognitive) territories. In particular, there is always a moment, in an improvisation, be it solo or joint, when Iam in the « zone », that is, in a type of trance where my conscious mind is not in control anymore, or at leastseems not to be in control ...
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