Kyung-An Han

I had to drink a lot of coffee to finish my proposal.

And then that was at work.

When I drove home, I had strong urge to drive through yellow light.

I mean, this is exactly what food flies do.

So when they get coffee at night, but not during the daytime, they become a little more impulsive.

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 so because they cannot control their behavior really well so i think this is a really good example of how caffeine interact 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 don't 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.