Mihaly Csikszentmihalyi's ideas are more precisely presented by Sylvia Vorhauser - Smith (http://brainbiz.com.au/the-neuroscience-of-flow/) :
In what is a major shift from its regular modus operandi, the beta wave activity of the brain (spikey, fast and furious) calms when in a state of flow to a steady alpha wave (smooth and free-flowing).
In this alpha state, the noise generated by relentless neural firing dullens, literally creating the ‘headspace’ for fewer and deeper connections. This shift from hyper-activity to hypo-activity dramatically enhances focus and concentration. The prefrontal cortex, home to complex decision-making, conscious thought processing, self-awareness and time recognition, recedes its dominance over our thinking and gives way to sub-cortical brain regions. This shifts the brain from the sequential serial (slow) processing of the prefrontal cortex, to the parallel (fast) processing of limbic regions, sparking new, creative and spontaneous connections between information and events.
A Change in Neurochemistry All brain activity results from neurochemical reactions. Neurons ‘fire’ chemicals into the synaptic gaps between them that are collected by receptors on receiving neurons. The type of chemical or neurotransmitter released, determines our feelings and reactions to the stimuli that generated them. For example, a large spider suddenly running across your computer screen will instantly trigger a burst of cortisol and adrenalin. Having invoked a threat response based on an instinctive fear (cortisol-hit), combined with the energy to escape the danger (adrenalin-rush) causes you to jump away from the screen, without a thought or plan to do so.
Fortunately, the flow state induces a brain reaction that takes us to the other end of the response spectrum: reward.Flow releases a highly potent cocktail of neurochemicals that sharpen our abilities and create optimum performance conditions:
● dopamine: popularised as the ‘feel-good’ chemical and involved in movement, memory and attention, dopamine is released as a reward when we experience positive thoughts, emotions and experiences. These positive effects cause us to seek more of its pleasure-producing sources (including food, sex and stimulants), an excess of which can lead to addiction.
● anandamide: this endocannabinoid (naturally produced opiate in the body rather than externally sourced), sometimes tagged the ‘bliss molecule’ due to its source ananda, meaning joy, bliss or happiness. It is involved in pain modulation, mood regulation and has anti-anxiety and anti-depressant properties. Anandamide has also been associated with neurogenesis (birth of new cells),
● norepinephrine: (aka noradrenalin) is often described as a stress hormone as it is released in the sympathetic nervous system and active in our fight/flight responses. Norepinephrine activates the body and alerts our senses.
● serotonin: this important mood stabiliser helps to regulate emotions and control sleep and waking patterns. Diet and exercise impact the level of serotonin as it requires the essential amino acid tryptophan found in a variety of foods.
● endorphins: renowned for generating the euphoria associated with ‘runner's high’, endorphins are natural pain blockers and are released through exercise, meditation and some foods, such as chilli.
Brain Changes and Flow :
Csikszentmihalyi’s explanation and description of the flow state concluded that certain conditions are necessary to achieve it. These conditions promote a flow state and can apply to any activity (work or play) that triggers the necessary elements.