The emote "v^√√v^──√v^√v^──√v^√√v^──" is commonly known as the "Cardiogram #2" emote. It consists of a series of upward and downward arrows, with some of them having square roots (√) or double square roots (√√) symbols. The emote is often used to convey a sense of excitement, intensity, or heart rate variability, similar to that seen on a cardiogram or electrocardiogram (ECG) monitor.