When we focus, switch tasks, or face tough mental challenges, the brain starts to sync its internal rhythms, especially in the midfrontal region. A new study has found that smarter individuals show more precise and flexible coordination of slow theta waves during key decision-making moments. Using EEG recordings and cognitive testing, researchers discovered that it s not constant brainwave synchronization that matters most, but the brain s ability to dynamically adapt its rhythms like a well-tuned orchestra. This flexible neural harmony seems to be a hidden engine behind attention, reasoning, and intelligence.