'On Your Wavelength', art installation. 藝術裝置

A visitor looks at 'On Your Wavelength', an art installation created by artist Marcus Lyall, which is powered by brain data donated via an EEG headset by visitors to the MERGE Bankside art festival, in Bankside, London, Oct. 8, 2015. (Dominic Lipinski/PA Wire via ZUMA Press)
Photos of the day - October 8, 2015
http://news.yahoo.com/photos/photos-of-the-day-october-8-2015-1444318692-slideshow/photos-of-the-day-october-8-2015-photo-1444319718085.html