Experimental Brain Research, 1995,
Aftereffects from jogging
Department of Psychology 0109, University of California, San Diego, La Jolla
California 92093-0109, USA.
Abstract. After running for 60 s on a treadmill, a runner who attempted to jog in
place on solid ground inadvertently jogged 152 cm forwards. One-legged hopping
on the treadmill produced an aftereffect in the same leg, but not in the other leg, and
this non-transfer suggests a peripheral neural site. Judgments of velocity and slope
were affected; running on a backward-moving or an uphill-sloping treadmill made a
stationary test treadmill seem to move forwards and a horizontal test treadmill seem
to slope downhill. These aftereffects suggest an automatic gain control process.
Key words: locomotion -- gait -- adaptation -- aftereffect
Running is no clockwork reflex but an adaptive skill. Runners constantly adjust
their running to the local terrain, shortening their stride uphill, picking their way
over rough ground and so on. Reviews of these adaptive processes can be found in