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In this brief explanatory segment, the speaker introduces Noopept, a widely used nootropic, and outlines its purported neurochemical actions. Noopept is said to enhance acetylcholine signaling by increasing the brain’s sensitivity to acetylcholine, and to elevate levels of brain‑derived neurotrophic factor (BDNF) and nerve growth factor (NGF). These mechanisms are linked to improved learning and memory, which the speaker metaphorically describes as making the "sound quality" of cognition better.
