article_snippet.sent: Half of the participants in A new study were given "an acute dose" of acetaminophen -- 1,000 milligrams -- and the other half were given a placebo with the same appearance.
article_snippet.sent: Those who took the acetaminophen rated all the photos less extremely than those who took a placebo.
article_snippet.sent: In other words, positive photos were not seen as positively under the influence of acetaminophen and negative photos were not seen as negatively," the authors reported.
article_snippet.sent: But acetaminophen did not affect how much blue a group of 85 people saw in each photo.
highlights_snippet.sent: Subjects taking acetaminophen reacted less strongly to both pleasant and unpleasant photos .
  