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If you’re looking for a quick memory fix, move your eyes from side-to-side for 30 seconds, researchers say.

Horizontal eye movements are thought to cause the two hemispheres of the brain to interact more with one another, and communication between brain hemispheres is important for retrieving certain types of memories.

Previous studies have suggested that horizontal eye movements improve how well people recall specific words they have just seen. But Andrew Parker and his colleagues at Manchester Metropolitan University in England wanted to know whether such eye movements might also help people recognize words they have just seen.

Recognition memory differs from recall memory in that people trying to recognize words tend to make false memory errors called source monitoring errors. This occurs when they recognize words but attribute their familiarity to the wrong source—they might think they just read the words, when they had actually heard them in a conversation earlier that day