If you look and listen closely in the Fern Room, you’ll notice some of the ferns trembling. This is Susurrati, an installation by Chicago artist Deborah Stratman with collaborator Rob Ray. Solenoids programmed at rhythmic intervals control the vibration patterns and add a faint tapping clatter, like an idiosyncratic Morse code. The Fern Room becomes a horto-fictional set, animated by selectively vibrating ferns. Plants turn into communicants that seem to whisper rumors about something unforeseen. If sound is “touch at a distance,” Susurrati is a composition of trembles.