Indeed England posed the first threat after only two minutes when a cross from Shaun Wright-Phillips flashed just out of the reach of England's captain for the night Wayne Rooney.
Then, participants performed what is known as the Stroop task where they were asked to identify the color of various words flashed on a screen, which spell out the names of other colors.
Twice Xavi had a sight of goal but the midfielder was crowded out on both occasions, Pedro flashed an instinctive volley wide from Dani Alves' cross, while Zlatan Ibrahimovic had a snap-shot well blocked by Walter Samuel.
One flashed what looked like a police badge and called out the victim's name, police said.
And they were almost made to pay as Stephen McGinn's cross was headed away by Danny Grainger as he ran back towards his own goal and Hugh Murray flashed a shot a wide after receiving the clearance 20 yards out.
Villa had won on their last visit to the Emirates towards the end of last season but they were struggling to venture out of their own half as Alex Oxlade-Chamberlain flashed another chance wide.
High crosses continued to cause problems for both sides and Vennegoor of Hesselink flashed a header wide before Steven Pressley's powerful nod was kept out by Combe.
Last summer, Direct Edge was at the center of a controversy over so-called flash trading, in which users of its ECN are flashed unfilled orders for fractions of a second before those orders are routed out to rival exchanges.
In a two-minute spell the Ivorian missed two superb chances: the first of which he fluffed after being picked out in the box by Florent Malouda and the second he flashed inches past the far post after initially holding off Briggs as he charged into the box.
Hibs substitute Abdessalam Benjelloun flashed a dangerous ball across the face of goal when he perhaps had time to pick out team-mate Steven Fletcher in a good position.
BBC: SPORT | Football | Scottish Premier | Celtic 1-0 Hibernian
Indiscipline then cost Perpignan as Scotland star Nathan Hines was singled out when referee Alan Lewis lost patience with his team's indiscretions and flashed the yellow card on 68 minutes.
At the other end Iversen flashed an effort wide and Given almost spilled a Ferdinand shot into Chris Armstrong's path just six yards out.
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