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The research conducted two experiments on 49 . All of the test participants listened to sentences being read . In one experiment, there was no background . In the other test, there was background noise, which made it harder for the people to hear the sentences. The scientists said that people in the with background noise blinked a lot . When the background noise increased, blink rates dropped even . Study co-author Dr Mickael Deroche said we automatically blink less "when important is coming". Ms Coupal agreed. She said: "We don’t just blink . In fact, we blink systematically less when information is presented."