Classicly

Viewpoint is a short science fiction story written by American fantasy novelist Randall Garrett, one of the key contributing author of Astounding stories Magazine.

Excerpts:

There was a dizzy, sickening whirl of mental blackness—not true blackness, but a mind-enveloping darkness that was filled with the multi-colored little sparks of thoughts and memories that scattered through the darkness like tiny glowing mice, fleeing from something unknown, fleeing outwards and away toward a somewhere that was equally unknown; scurrying, moving, changing—each half recognizable as it passed, but leaving only a vague impression behind.