We are presently
conducting experiments in collaboration with a martial arts expert -black belt second degree karate expert -who has 12
years of experience teaching children with developmental disabilities. We first
want to extract motion patterns from video sequences and then be able to
reconstruct physical motions of the limb segments in three dimensions. This is
in collaboration with CS students and will create a non-invasive recording
system with commercially available technology to disseminate new non-invasive methodology amongst the
Developmental and Clinical Communities. Second we are pursuing questions on the
space-time equivalence that I have proposed for motor learning and motor theory of mind. We seek to
understand how the system builds a map of body timing from sensing its own movements
and how body schemas are modified longitudinally to represent different
temporal coordination patterns for the same basic routine.
We have discovered that voluntary and automatic controls coexist in the same motions and are separable according to the dynamics. Voluntary segments are dynamics-invariant (low variability) despite speed changes and loads. Automatic segments are dynamics co-variant. The trajectories change qualitatively with the changes in dynamics. It is not only that they are more variable but that they actually change.
Given a trajectory at random we can know across different speeds and loads if it was performed in voluntary mode or if it was automatically performed -in what we call auto-pilot mode.
How do we form
a motor theory of mind? How do we anticipate the responses of an
opponent? A real opponent? And those of an opponent reflected on a
Which is a better source of movement guidance to teach participants with
Autism Spectrum Disorders (ASD)?
How do we
coordinate different body parts and which parts of the body tend to
lead or lag during the movements? E.g. When
is the head leading? When is the trunk leading?
of linear and angular speeds interactions are time-invariant across
acceleration maxima coded relative to speed maxima in different motion
of a continuous sequence?
(5) How do the trial-by-trial dynamics fluctuations of the movement execution contribute to sensory-motor learning?
(6) Are the low-variability movement segments normally guided by the sensory systems and the high variability movement segments normally guided by the motor systems? How does their interplay change in ASD?
Our truly gifted performer who here imitated the expert for the first time ever and did it quite well, he had never practiced any kind of martial arts. This was the first time he ever did in our very first session with him. Amazing!