Stimulators

"She didn't leave. Not that the shrink held any dark power over her. But it was easier to stay. Who'd know the day she was cured? Not him, he'd admitted that himself. "Pills are different," she pleaded. Hilarius only made a face at her, one he'd made before. He was full of these delightful lapses from orthodoxy. His theory being that faces are symmetrical like a Rohrschach blot, tells a story like a TAT picture, excites a response like a suggested word, so why not. He claimed to have once cured a case of hysterical blindness with his number 37, the "Fu-Manchu" (many of the faces having like German symphonies both a number and a nickname), which involved slanting the eyes up with the index fingers, enlarging the nostrils with the middle fingers, pulling the mouth wide with the pinkies and protruding the tongue. On Hilarius it was truly amazing." 

—Thomas Pynchon, The Crying of Lot 49