So I have no reference for this, folks, but it was some great info that I wanted to pass along. I just finished my placement at a school for kids with autism, and an OT informed us that sensory information can stay in a person's system for up to 2 hours!! So if a child comes to you and is very over-stimulated or hyped up, the cause of that could have occurred anytime within the past two hours. Definitely something to think about!