each of these subsystems update what they are reacting to at a different rate. Your visual cortex can cohere in less than half a second. A stress hormone like cortisol, on the other hand, has a half-life of 60–90 minutes and so can take up to 6 hours to fully clear out after the onset of an acute stressor. This means that if we switch what we pay attention to more often than, say, every 30 minutes, our system will be more or less decohered—different parts will be “attending to” differ...
