Brainstorm (1983) IMDb
Scientists figure out a way to record sensoria (sensory input). This technology is used for sex, military torture, and communication in a shaky marriage. It also finds one unforeseeable application: when a scientist has a heart attack, alone in the lab, she records a full tape of experiences.
Cyberpunk thriller. Uneven, with lots of holes and silliness, but the central idea is good and gets some fairly effective treatment. This is surprising for a movie intended as a technical showcase for Showscan.