If I'm reading the source article correctly (linked below by Perixoog), it sounds like change was so subtle that the participants themselves weren't even aware of it:
"Participants were unaware of this manipulation"
"We chose to manipulate sensorimotor variability so that participants were unaware of the fact that there was any change in the task"
So not only are the tasks similar, but they're so similar that participants weren't consciously aware that they were doing something different. Wacky
They also mention that "participants strengthened skill through the re-exploration of sensorimotor space."
I wonder how large an exploration of the sensorimotor space could be while generalizing/improving the original skill. (re batting and kendo). No idea, but interesting article either way
"Participants were unaware of this manipulation"
"We chose to manipulate sensorimotor variability so that participants were unaware of the fact that there was any change in the task"
[1] http://www.cell.com/cms/attachment/2045379445/2056784269/mmc...
So not only are the tasks similar, but they're so similar that participants weren't consciously aware that they were doing something different. Wacky
They also mention that "participants strengthened skill through the re-exploration of sensorimotor space."
I wonder how large an exploration of the sensorimotor space could be while generalizing/improving the original skill. (re batting and kendo). No idea, but interesting article either way