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Scotland's Eve Muirhead is the reigning world champion and one of those nine teams who was playing in Winnipeg over the weekend. She said her team will spend four weeks in one five-week period this fall in Canada, playing the world's best competition and getting ready for Sochi, where her team already has a berth.

Muirhead says the women's money list at the moment paints a pretty accurate portrait of the state of international women's curling right now.

"I think it really is a case of the rest of the world catching up with Canada," said Muirhead.

"There isn't such a huge gap between Canada and the rest of the world like there maybe once was. And that's a good thing, I think."

Muirhead wouldcalled SuperVision, require players to use a mouse to select, or steer, objects within the game using their peripheral vision. Eye-trackers check for when players look directly at objects within the game and players are penalised accordingly.

"Players struggled at first as they attempted to control and resist their instinctive impulse to look," said Argenis Ramirez Gomez, PhD student and researcher at Lancaster University. "The games go against our natural behaviour. The players know they can't look but having to make decisions and interact with objects in the games forces players to lose control over their instincts and so they indulge their desire to look directly at the objects, failing in the game. But over time people developed strategies to overcome the challenge, such as focussing on a particular