Back'N'Task - Increasing intelligence
Genre Strategy -> Puzzle
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The n-back task is a continuous performance task that is commonly used as an assessment in cognitive neuroscience to measure a part of working memory and that has been suggested as a method for increasing fluid intelligence. The n-back was introduced by Wayne Kirchner in 1958.

The task
The subject is presented with a sequence of stimuli, and the task consists of indicating when the current stimulus matches the one from n steps earlier in the sequence. The load factor n can be adjusted to make the task more or less difficult.
To clarify, the visual n-back test is similar to the classic memory game of "Concentration". However, instead of different items that are in a fixed location on the game board, there is only one item, that appears in different positions on the game board during each turn. 1-N, means that you have to remember the position of the item, ONE turn back. 2-N, means that you have to remember the position of the item TWO turns back, and so on.

Neurobiology of n-back task
Meta-analysis of 24 n-back neuroimaging studies have shown that during this exercise the following brain regions are consistently activated: lateral premotor cortex; dorsal cingulate and medial premotor cortex; dorsolateral and ventrolateral prefrontal cortex; frontal poles; and medial and lateral posterior parietal cortex.
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