[WalterSear]

Yes, but that's a specific physical stressor, resulting in mental stress. It's not what is being examined in the article and modeled in the experiment.

[khedoros1]

That doesn't change the fact that lack of sleep is a stressor. I was replying to your statement:

> "I don't think they are differentiating between stress, that this study discusses, from lack of sleep, which also affects memory."