A long time ago, around the late 1980s or possibly the early 1990s, I read a science fiction story about a man hit with a drug that keeps resetting his short-term memory.
I remember the general plot, but I have no idea of the story title, the author's name, nor the book title for the anthology in which I read the story. (I'm sure it was a hardback volume which I checked out from a library, and I think it was a school library, but I don't swear to that. The story itself did not seem geared toward a juvenile audience; all of the characters were grown-ups.)
Here's some of the plot: The main character (third-person protagonist; not narrating the story) is an American, either a military officer or a trained spy (or some of each?), who is on a dangerous mission. The general idea is that the hero has deliberately been set up to be captured by the enemy. I believe there was a Cold War feel to it, with the enemy intelligence service reminding me of the KGB. However, I can't remember if such words as "KGB," "Iron Curtain," "Communist," "Soviet Union," etc., were explicitly mentioned, or if the story used other terms for the opposition.
The enemy agents had a clever new drug of which they were very proud. It sharply reduced the risk of a prisoner successfully escaping, because once he had a dose of it in his metabolism, he would spend the next few hours having his memory "reset," over and over, perhaps just a few minutes apart. Each time this happened, the subject would not be able to remember anything that had been happening to him lately (not since the drug was first injected, at any rate -- I don't remember if it retroactively blotted out some of his memory from before that moment), which would make it very hard to devise and carry out any sort of elaborate plan. It would also be very hard for him to maintain a convincing tissue of lies when under interrogation, if he couldn't remember what response he had given to an important question just five minutes ago! (I don't remember which aspect -- preventing escape or facilitating interrogation -- was considered more important by the people using the drug, but the general idea was to keep the subject off-balance, psychologically speaking.)
The kicker was that the hero had walked into this trap knowing exactly what drug his captors would be likely to use to soften him up. But it was a risk he had to take -- I think because he wanted to rescue some brilliant scientist who had already fallen into their hands -- and having himself taken to the same detention facility seemed like the best way to catch up with that other valuable prisoner. So his government had gone to a lot of trouble to carefully train him for this dangerous mission. Part of the elaborate preparation had involved helping the hero condition a new reflex into himself: "Whenever you suddenly blink and feel disoriented, as if time has passed when you weren't looking, remember one thing you must do immmediately: Look around!" (This was possible because the drug wouldn't wipe out what he had been doing days or weeks before it was administered to him.)
So after the drug is in him, at regular intervals a new scene will start with the words:
(The old scene, of course, begins just a second or two after the previous scene ended.)
Then the hero glances all around himself and sees if, for instance, there's an immediate threat, such as a guard in enemy uniform who seems to have just been knocked down and now is scrambling back to his feet to go another round.
Somehow (I don't remember the tactical details), he manages to find the scientist and they escape the area, finally hijacking a military plane (I think) to fly them back to friendly territory.
All I can say about the author is that I really don't think it's one of the authors who are still remembered today as "Very Big Names of Twentieth Century SF." For instance, it wasn't a story from Isaac Asimov or Poul Anderson or Gordon R. Dickson. If it were, I am virtually certain I would have run across it again, sometime in the last few decades, in collections of their various short stories. And I never have. But if I can find out who wrote it, then I can find out if that person had any other published works which I might find reasonably entertaining.
As to the story itself, I suspect it was in the neighborhood of 30 pages long, give or take. Definitely nowhere near novel-length, nor even what I'd normally call a novella. I have a suspicion that the story was already many years old before I ever stumbled across it in a library -- probably first published sometime before 1970? (But I could be wrong about that.)