Monday 9 March 2009

The Sleeping and Learning


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The Sleeping and Learning

Approaches involving human functional imaging (the recording of activity from larger neuronal networks) and genetic or pharmacological manipulation of the brain have converged to support the notion that the stages of sleep (slow wave sleep and REM sleep) function in concert to reprocess recent memory traces and consolidate memory, and this across different species and different learning tasks (Stickgold, 2003).

Whereas REM sleep seems to benefit particularly the consolidation of skill memories, slow wave sleep enhances particularly the consolidation of explicit declarative memories depending on the hippocampus. Numerous sleep deprivation studies support the idea that sleep contributes to the stabilisation of acquired memory.

Evidence from experiments in animals and humans support the concept of an “offline” reprocessing of recent experiences during sleep that is causative for memory consolidation (Ji and Wilson, 2007; Rasch et al., 2007), and analysis of the thalamocortical system establishes the reciprocal observation that sleep is itself a plastic process affected by waking experience (Miyamoto and Hensch, 2003).

One hypothesis is that sleep plays a key role in neural plasticity, i.e. in maintaining appropriate connections between neurons through reinforcing significant connections between synapses and eliminating accidental ones. It has been proposed that the entire cortex experiences neural plasticity in sleep, as it “updates” following experiences of the world, especially the previous day’s events (Kavanau, 1997).

"Understanding the Brain", The Birth of a Learning Science, 2007, page 74

2 comments:

  1. Hello Hegel.

    A Japanese study from last year showed that sleep does indeed help consolidate memory and skills learned during the day.

    And a more recent study showed that learning doesn't happen without sleep.

    Both are referenced in this post:
    http://mindsparkebrainfitnesspro.com/brain-training-blog/training-tip-sleep-after-you-train/

    Best wishes,
    Martin Walker
    www.mindsparke.com
    Effective, Affordable Brain Training Software

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  2. Thanks a lot for the reference, I think we need more studies because sometimes scientific studies could have a lot differences.

    I think we need to be awake and alert for get new dates.

    Be good, and if you can't be good, be careful.

    Hegel

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