Hennix was affiliated with MIT's AI Lab in the late 1970s and was later employed as research professor of mathematics at SUNY New Paltz; she also worked with mathematician Alexander Esenin-Volpin.

Later, Hennix studied with Stockhausen and was among the pioneers in Sweden experimenting with main-frame computer generated composite sound wave forms in the late 1960s.

[3] In 1968, she connected with Fluxus artists Dick Higgins and Allison Knowles in New York, and began collaborative relationships with figures such as La Monte Young and Henry Flynt.

[5] She pursued studies with raga master Pandit Pran Nath[5] and led the just intonation live-electronic ensembles Hilbert Hotel and The Deontic Miracle.

[7] Lacan's seminars inspired some of Hennix's later performances and installations, including an unfinished collaboration with her long-time partner, photographer Lena Tuzzolino, which was exhibited at Stedelijk Museum Amsterdam.