>>14338489The brain is constantly trying to compress its representations. The lightbulb moment is when a large increment in compression progress is achieved, and representations suddenly become more sparse. This entails a positive reward prediction error, encoded by the change in firing rates of dopamine neurons. Attention is focused on the subunits responsible for the improvement, which are encoded by the language center at which point the "thought" pops into your head. With major realizations you'll experience the sensation of epistemic joy, which is accompanied by the urge to go tell others about your discovery. Archimedes runs through the streets naked and screaming, and civilization advances.