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Norepinephrine Activity

Meaning

Norepinephrine Activity refers to the functional state and signaling intensity of the neurotransmitter and hormone norepinephrine (also known as noradrenaline) within the central and peripheral nervous systems. This catecholamine is essential for regulating alertness, attention, the sleep-wake cycle, and the fight-or-flight response, functioning as a key component of the sympathetic nervous system. Clinically, optimal norepinephrine activity is necessary for sustained focus and appropriate cardiovascular response to stress. Dysregulation can contribute to anxiety, depression, or orthostatic hypotension.