In medical terminology and clinical diagnostics, "flickering" is frequently used to describe rapid, involuntary, and rhythmic muscle twitches, neurological sensory disturbances, or visual anomalies. For example, a flickering sensation in the visual field can describe ocular migraines or retinal flashes. In cardiology, terms related to flickering describe rapid, uncoordinated muscle fiber contractions in the heart chambers, such as atrial fibrillation, where electrical impulses cause the heart muscle to quiver rather than pump effectively.
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