This study was looking and the different brain effects of a live vs. recorded experience with another person, and scientists were somewhat surprised about how much of a difference it made.
One-on-one live interactions stimulate many areas of the brain - including reward centers that increase general alertness and attentiveness. In the bottom right, see how much activation is in the anterior cingulate - that orange blog connecting both hemispheres. That's just the spot (see below) that kids with ADHD had trouble activating - and there is a suggestion that individuals with ADHD are more reward-sensitive for particular tasks.
When we see students with severe weaknesses in working memory, often we find that optimizing their reward systems may be essential to getting the most out of their education. Rewards are not gold stars or money (although it may be money) - they may also be social or experiential - like emphasizing humor or novelty.
This research may not come as a surprise to some homeschooling parents - because they have seen their child dissipate into a distracted, inattentive, and unengaged student once they walk into the school corridors, but know they will be revived working one-on-one with a tutor they really like or even with mom or dad at the kitchen table.
Some of the key to the role of the anterior cingulate is that this brain region is important for mood, emotions, and personal or episodic memory. Among our dyslexic students, we often see a very strong preference for personal learning - that's why many may later chose to enter the caring professions, business, or jobs that involve fieldwork.