1. English Theme 45 pp.86-91 Date: June 12, 2007 Room: 8-405
Instructor: Mafuyu Kitahara
Material: Thelen, E. (1995) “Time-scale dynamics and the development of an embodied cognition” in R. Port and T. van Gelder (eds.) Mind as motion, Cambridge: MIT Press

2. Hannah: silent lady No recording of limit-cycle, just hands
Two infants need different strategies:
Gabriel: too energetic, needs more control
Hannah: too silent, needs more energy

3. First reach (1)
Gabriel Hannah

4. First reach (2) Gabriel >> Hannah Gabriel Hannah
Area of trajectories (seen from front)
Speed (direction-less)
Torque (MDT = inertia, vs MUS = muscle)
Gabriel
attempted to slow down, but still spring-like
Hannah
smooth, slow, mature-looking

5. Gabriel: more detail
reach (M-->T) = continued from other moves.

6. Time-scale dynamics Slow process: body and muscle grow
Fast process: everyday movements
Everyday process: feed learning
deus ex machine is not there!