Am I Still There?

Transcriber's Note:
This etext was produced from Analog Science Fact & Fiction September 1963. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.
Which must in essence, of course, simply be the question What do I mean by 'I'?
Lee slid off the examining table and began buttoning his shirt. He had had a medical examination every six months of his adult life, and it always seemed strange to him that, despite the banks of machines the doctor had which could practically map a man from a single cell outward, each examination always entailed the cold end of a stethoscope against his chest.
He tucked his shirt into his pants and turned to the examining doctor who was writing on a chart.
Well? Lee asked him.
Sound as a dollar, replied the doctor. Of course Dr. Flotman or Dr. Roberts might turn up something on their electronic monsters, but I see no reason why we can't go ahead on schedule.
Lee felt relieved. Even while being examined by technicians, M.D.'s and biologists, he had been conscious of the hundreds of little dull pains which had nibbled like mice in every corner of his brain. Sometimes he felt like a piece of his brain was being completely smothered, a horrible sensation of having a part of his head severed from him. This would go away, but would appear again in a different area, usually in about fifteen to thirty minutes. Well, the doctor said he was fit for surgery. That would end this nagging pain, just as it always had in the past.
... If you're ready now. Lee became aware the doctor was speaking to him.
Oh, Lee said. He had no idea what the doctor was talking about. I'm sorry, I guess I didn't hear what you said—
The doctor smiled tolerantly. I said you can see Dr. Letzmiller this afternoon to get the final O.K.
Letzmiller? Who's he? I thought you said I was ready to go. Lee knew he sounded a little petulant, but he was tired from all these examinations, and besides, his head hurt.