What specific aspects of impact gestures drive the marimba illusion? Does the illusion require a sudden change of motion direction simultaneous with the onset of the impact sound? How can performers best use such motions in their playing?
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James Armontrout
BA (UVA), 2007
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Using the virtual marimbist, James Armontrout was able to deconstruct the striking gestures used in the original illusion, establishing that it is driven by the duration of the post-impact motion, a finding with both practical and theoretical implications. After completing his project, we gave a poster presentation on this research at the 2007 Auditory Perception, Cognition, and Action meeting in Long Beach, CA. Additionally, we have published this work in Attention, Perception, & Psychophysics (which can be downloaded here).
View sample stimuli and results from this work:
Exp 1 - Crossed gestures
Exp 2 - Inversion and through-the-bar motion
Exp 3 - Velocity, distance, & time
Exp 4 - Acceleration & jerk |
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