Psychophysical approaches to motor control

A variety of experimental approaches have recently helped identify the reference frames and coordinate systems that describe the control of eye and limb movements. These descriptions apply at the behavioral level and also, despite the distributed nature of neural processing, to the population responses of different neural structures. Studies on the process of adaptation to altered environments have also provided new insights into the controlled variables for movements: although handpaths can be adapted to extrinsic demands, the adaptation is, in some cases, in an intrinsic frame of reference.