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Abstract:
Mental deficiency is thought a cerebral malfunction impairing
learning capability. Here, we present the results correlating
performance and EEG activity in a group of mental deficient
students playing different video-games designed to investigate
different cognitive functions: mental rotation, story
understanding, charade solving and puzzle. They are enrolled either
on first or second kindergarten level (K1 and K2 groups) or first
or second elementary school level (E1 and E2 groups) . Event
Related Averaged Activity was used to provide functional brain
imaging mappings (ERFM) associated to defined events of each
video-game. Regression analysis was used to assess the correlation
coefficient ri,j of the averaged activity at the recording site i
to that at the recording site j. ri,j was assumed to measure the
possibility that neurons at the site i are exchanging information
with those at the site j. Shannon's entropy was used to measure
such message exchange and to generate ERFM. Multivariate regression
analysis showed that: 1) error and time in solving the games
decreased as students progresses from K1 to E2, and 2) Shannon's
entropy decreases for all game events from K1 to E2. These results
show that mental deficient students improve their video-game
performance as they academic level increases, in the same way
normal students do. Also, this performance improvement is
associated to a reduction in the cerebral effort to solve the
games.
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