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Information Filtering

Meaning

Information Filtering, in a neurophysiological context, is the essential cognitive mechanism by which the central nervous system selectively processes relevant sensory and internal data while actively suppressing extraneous or non-critical stimuli. This process is fundamental to maintaining focus, preventing cognitive fatigue, and protecting the delicate balance of the neuroendocrine stress response. Effective filtering ensures that the brain’s limited metabolic resources are dedicated to salient tasks and internal homeostatic regulation. Impaired filtering leads to sensory overload and chronic HPA axis activation.