CVS was performed by pouring 20 mL of iced water for 1 minute in the external ear canal. Left-brain-damaged patients received both left and right stimulations (in different occasions, with a time interval of at least 24 hours). In right-brain-damaged patients, only the left external ear was irrigated for ethical reasons, as right cold CVS may induce a worsening of neglect-related symptoms in these patients.3 CVS produced a brisk nystagmus in all patients, with the slow phase toward the side ipsilateral to the irrigation.
Fulltext for the cold water experiment: http://dl.dropbox.com/u/5317066/2005-bottini.pdf
The method, for would-be experimenters:
EDIT: After reading the paper, I resolved to try it myself; my results: http://lesswrong.com/lw/20/the_apologist_and_the_revolutionary/5xgn