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One of the fundamental properties of our environment is that it is composed of a multitude of sensory information. Given such richness of input, humans are faced with the problem of having limited capacity for processing information, on the one hand, and the need to analyze as much of the sensory input as possible, on the other hand. Attention is the cognitive mechanism that allows effective selection of relevant information (e.g., the letters that you are reading right now) and an inhibition of “at the moment” irrelevant information (e.g., the humming sound of your computer).

Effective selection of information from the surrounding environment depends on the ability to select information in the most efficient manner and to distribute attentional resources in a systematic fashion based ...

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