Perhaps off-topic, but there's some people who believe that this can be what happens during surgery under anesthesia, if the dosage is off.

From what I understand, there's 3 parts to modern anesthesia: Blocking pain signals, preventing the formation of memories, and inducing paralysis of the major muscle groups. If the former is dialed in too weakly, it's possible that the patient is feeling pain, unable to do anything about it, but won't remember it at all when they wake up.

(Looking it up now, it seems that making the patient unconscious is perhaps the same drug that prevents memory formation... I realize now I understand this less well than I thought I did.)

Low blood sugar will also do this. The record button just stops working even though your physical body can and will still do things. A common issue with diabetics with hypoglycemia.

Relatedly, look at the concept of "twilight anesthesia".