Video narration
Why does a phone buzz make you reach for it-or ignore it? When your phone vibrates or sounds, your brain isn't just registering a noise. It's making sense of information: what you noticed, what you were doing, and what you already know about that alert. Brain cells called neurons pass messages using electrical and chemical signals. Their connections let activity combine, so the same buzz doesn't automatically mean the same thing every time. You may recognize a message, expect a reminder, or decide you can wait. That connected activity helps guide what you do next, though the exact brain activity varies from moment to moment. No tiny boss makes every decision. Neurons share the work across networks. So your brain turns the buzz into a signal, links it with what you know, and helps guide your next move.