SUBJECTS
Theoretical developments on the perceptual/intrinsic control of action. Topics include: ecological optics, ecological acoustics, biomechanics, perceptuomotor development, perceptuomotor dysfunction; neural perceptuomotor processes in motor cortex, parietal cortex, cerebellum and other areas; gaze control, timing actions, intercepting, and guiding locomotion when running, driving and flying; intentional dynamics and general tau theory.
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Changing optic array at the eye of a runner. The projection of this provides tau information, as shown in the diagram on the right. (Lee 1980) |
Optical specification of tau: τ(ΟΤ')=−τ(Ο*Τ*) and τ(ΟG')=−τ(Ο*G*), where τ(Χ)=(dΧ/dt) for any Χ. (Lee 1980) |
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Tau-coupling two movements by keeping the two taus in constant ratio. (A) Extrinsic tau-coupling of the drumstick (left) onto the conductor’s baton (right). (B) TauG-guidance of the drumstick by tau-coupling onto an intrinsic movement. (Lee 1998) |
How gap, Χ, changes under tauG-guidance: τΧ=κτG. On the left side of the graph the gap is opening: on the right side it is closing. (Lee 1998) |