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Attention acts as a filter, directing cognitive resources to relevant stimuli from "summary" of Cognitive Neuroscience by Gazzaniga,Michael,Ivry,Richard B.,Mangun,George R.
Attention serves as a vital mechanism in cognitive processing, effectively sifting through the myriad of stimuli that bombard the senses at any moment. By prioritizing certain inputs over others, this mechanism allows individuals to focus on what is most relevant to their current goals or tasks. When confronted with a complex environment, the brain must allocate its limited resources strategically. This allocation is not arbitrary; rather, it relies on both intrinsic factors, such as personal interests and motivations, and extrinsic factors, including the salience or novelty of stimuli. For instance, a sudden loud noise may capture attention instantaneously, while a conversation with a friend requires sustained focus. The neural underpinni...
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