Lyrica causes side-effects in some patients, including problems with mental concentration and attention.

VOA: special.2011.08.02

Expect the unexpected. And learn concentration.

VOA: special.2011.05.16

Christiano Ronaldo, who plays for Portugal and Spanish football club Real Madrid says the noise disturbs the players' concentration.

VOA: standard.2010.06.14

While they were in the brain-scanning machine, they were asked to do tasks that required concentration and attention.

VOA: standard.2009.12.19

But Muller's mother was shipped to the Auschwitz concentration camp and never heard from again.

VOA: standard.2010.04.10

"The Nobel Prize in literature for 2009 is awarded to the German author Herta Mueller, who with the concentration of poetry and the frankness of prose depicts the landscape of the dispossessed,"

VOA: standard.2009.10.08

Paul Pillar,a former senior CIA intelligence officer now with Georgetown University's School of Foreign Service, favors a shift away from direct combat operations to a concentration on training Afghanistan's army and police, and economic development.

VOA: standard.2009.10.15