Thus, when decisions are being made, EEG can help determine the structure of the network involved in the process. In fact, it was this network detection ability that gave us our first neurological insights into flow. Back in the 1970s, Csikszentmihalyi used EEG to examine the brains of chess masters midgame. He found a significant decrease in activity in the prefrontal cortex, the part of the brain housing most of our higher cognitive functions. This may seem surprising. Chess is a game of reasoning, planning, and strategy,
