““Neuroscientists have observed that several changes in brain function tend to accompany the flow state. The brain’s electrical activity always unfolds in wave patterns. Normal consciousness is associated with a high-frequency beta wave pattern. In the flow state, brain rhythms drop down to the borderline between low-frequency beta and theta waves. Flow is tied also to sharply reduced activity in the prefrontal cortex, the part of the brain that gives rise to a sense of self and that includes the aforementioned dorsolateral prefrontal cortex—the brain’s internal critic. And at the molecular level, several neurotransmitters, or brain messenger chemicals, are released during flow. Among these are norepinephrine, which enhances mental focus, and endorphins, which are the source of the famous “runner’s high.” It is not necessary to measure brain waves or neurotransmitter levels to figure out if an athlete is operating in the flow state. You can just ask. Athletes know when they are in flow because the feeling is unmistakable—it’s that sense of absolute unity with one’s effort that Siri Lindley””
