The BrainWave Drawings were initially developed by Nina Sobell (1947, Patchogue, New York) at the Sepulveda Neuropsychology Laboratory in California, in 1973. Using an electroencephalogram (EEG) to capture and measure electrical activity in the brain, Sobell connected two participants to the apparatus, recording the amplitude and frequency of their respective brain activity. The data was also communicated in real time to a computer so that it could be combined, generating curved patterns. The artist explains: ‘Many people feel that technology stands in the way of communication. With BrainWave Drawings, I created a situation using technology as a medium to enable people to express themselves more easily than without it. It’s also an axiom for creating technology that encourages human interaction instead of replacing it’. By cross-referencing information, Sobell makes visible moments of synergy in the brain activity. Using an Apple II computer she subsequently produced a series of digital images based on these experiments, using the BASIC language in 1980. The documentation presented here illustrates this multi-faceted project.