How attention helps the brain perceive an object

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The ability of the brain to ignore extraneous visual information is critical to how we work and function, but the processes governing perception and attention are not fully understood. Scientists have long theorized that attention to a particular object can alter perception by amplifying certain neuronal activity and suppressing the activity of other neurons (brain ”noise”). Now, scientists have confirmed this theory by showing how too much background noise from neurons can interrupt focused attention and cause the brain to struggle to perceive objects.

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