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Why (smart) practice makes perfect
Date:7/12/2010

he variable practice group who received magnetic stimulation in the prefrontal cortex failed to retain or "consolidate" the arm movement as well as those in the same group who did not receive magnetic stimulation.

This implied that the prefrontal cortex was necessary for consolidating the memory.

Likewise, constant practice volunteers who received magnetic stimulation in the primary motor cortex failed to retain the arm movement as well as volunteers in the same group who did not receive magnetic stimulation.

"While it may be harder during practice to switch between tasks you end up remembering the tasks better later than you do if you engage in this drill-like practice," Winstein said.

"In motor skills training they know this, in educational programs where they're teaching the kids cursive hand writing, they know this."

Winstein described the study as "the linking of motor neuroscience to behavioral movement science to better understand the neural substrates that mediate motor learning through optimal practice structures. No one had done this before in this way."

The magnetic interference tests also helped define the time window for the brain to consolidate skills. For volunteers chosen to receive interference four hours after practice, the procedure had no effect on learning. This suggested the brain already had done its consolidation.


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Contact: Carl Marziali
marziali@usc.edu
213-740-4751
University of Southern California
Source:Eurekalert

Page: 1 2

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