Kyung-An Han

So in a condition where they need to control their behavior, like a strong airflow, which is like a wind,

or sound of predators, then they need to stop not to get seen.

But they all of a sudden show impulsive flying because they cannot control their behavior really well.

So I think this is a really good example of how caffeine interacts with time of day to

provide something that is not typically seen with what they typically do during the daytime.

Well, I can tell you this much.

You don't want to talk to your parents about your obviously secret that you do not want to share with your parents, for example.

Impulsivity can be cognition as well as movement.

Obviously, we study impulsivity on movement because animal model that we are studying

is foot flies.

So it's harder for us to ask them how well that they are controlling their cognition, although we measure their capacity to learn and remember.

We haven't studied the effect of caffeine regarding its impact on their memory, but this is another step that we are approaching in the next step.

So at least in their performance, they cannot control their behavior, and then they become impulsive, which is

Exactly.

Maybe it's not a good idea for them to perform anything really critical after they stay awake, plus caffeine.

Well, then what would be the best way to control their wakefulness at night?

I cannot give you an answer for it, but at least we know that caffeine is not the best answer.

So if you have important surgery at 7 o'clock in the morning after you do another surgery overnight, then maybe it's a better idea not to drink caffeine at night.

Yet maybe try to get good sleep during the daytime before they get into night shift.

So then maybe one way to control to be awake without caffeine.