However, it was not clear this impact of low frequencies would be seen in the real world, or when such sounds are not consciously detectable. Writing in the journal Current Biology, the team report how they set up an electronic music concert by the Canadian duo Orphx at McMaster and asked attenders to wear motion-capture headbands before turning on and off specialised VLF speakers every 2.5 minutes during the 55-minute performance. Results from 43 attenders who agreed to wear a headband revealed they moved 11.8% more, on average, when the VLF speakers were turned on. Cameron noted this meant people danced more vigorously, or with more exaggerated movements. At the end of the concert, 51 attenders completed a questionnaire that asked whether they could feel the music in their body, and whether the bodily sensations affected their compulsion to move.
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