Rumination activates the default mode network (DMN) - the brain's self-referential processing system. This is the neural circuitry that fires when you're thinking about yourself in relation to others: your identity, your social standing, your mistakes. It's the brain asking, over and over, What does this say about me?
Neuroscientists have a name for the brain network that fires up when you're not focused on an external task: the default mode network, or DMN. It's the constellation of regions - the medial prefrontal cortex, posterior cingulate cortex, and angular gyrus among them - that hums to life when you daydream, reflect on yourself, or think about other people's mental states.
Like all of us, I'm busy, but most days I manufacture the time to cook for my family. I braise beef ribs for hours, I let stock simmer all afternoon, I julienne vegetables till they're just right for the salad. It's slow, deliberate work. I move through the kitchen without hurry, letting things take the time they need. And when I do this, when I give a meal the patience it asks for, it shows. The flavors deepen.
You open your laptop, ready to start. For a moment, there is silence-then the noise begins. "I don't have much time." "This isn't hard; why can't I just start?" "I really should've finished this yesterday." "I really could have knocked it out of the park if I had just started sooner." "Why am I always like this?" Thoughts clash like radio stations out of tune. You freeze, mid-motion.
Dan Brown's latest thriller, The Secret of Secrets, follows neuroscientist Katherine Solomon as she reports how low GABA, an inhibitory neurotransmitter in the nervous system, expands consciousness. She states in her research that low levels of GABA enable things like telepathy, remote viewing, and more. She explains that on our deathbeds, we experience a precipitous drop in GABA, revealing to us what lies beyond. Her science leads to a mind-bending cat-and-mouse chase around the most beautiful parts of Prague.
Archimedes discovered that the volume of water displaced by an object is equal to the volume of the object itself, enabling him to determine the crown's purity.
