0000000000416120
AUTHOR
T. Pozzo
Looking into the eyes of a conductor performing Lerdahl's “Time after Time”
The eye movements of a conductor were tracked during a performance of Lerdahl's “Time after time”. The analysis of the data revealed that, for most of the time, the conductor was looking at the score, rather than the performers. Most of the score-reading was in anticipation of the music to be played. Micro- and macro-anticipations could be defined, the former being between 2 to 5 seconds in advance, the later being more than 5 seconds in advance. The largest visual anticipations were as long as 10 seconds. The longer anticipations were found to correspond to the occurrence of those thematic cells the conductor considered to be of expressive importance for the piece. This suggests that the …
Anticipatory postural adjustments during joint action coordination
International audience; There is a current claim that humans are able to effortlessly detect others’ hidden mental state by simply observing their movements and transforming the visual input into motor knowledge to predict behaviour. Using a classical paradigm quantifying motor predictions, we tested the role of vision feedback during a reach and load-lifting task performed either alone or with the help of a partner. Wrist flexor and extensor muscle activities were recorded on the supporting hand. Early muscle changes preventing limb instabilities when participants performed the task by themselves revealed the contribution of the visual input in postural anticipation. When the partner perfo…
Head and Body Coordination during Locomotion and Complex Movements
Publisher Summary This chapter discusses theory in which it is argued that during complex movements, the head is stabilized intermittently under the control of gaze, and that this stabilization allows the head to serve as an inertial guidance platform for the control of multilimb movement. The otolithic organs, sacculus and utriculus, are inertial detectors of linear acceleration of the head in the plane of their macula. It is well established that in normal gravity conditions, although the perceived gravitational vertical deviates from the objective vertical by a few degrees, gravitational reference is used not only for posture but also for perceptual tasks that involve orientation in spac…