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Letters |6 February 2007

Effects of Coffee and Napping on Nighttime Highway Driving

Pierre Philip, MD, PhD

Article, Author, and Disclosure Information
Author, Article, and Disclosure Information
  • From Centre Hospitalier Universitaire Pellegrin, Bordeaux, France.

    Potential Financial Conflicts of Interest: None disclosed.

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Dr. Yee wonders whether 1 of our participants could have had a nocturnal visual deficit that could explain the driving handicap recorded during our nighttime driving sessions. All participants were healthy, including their perceptual and psychomotor functions. We used the expertise of our copilots (who are professional driving instructors) to test the normative driving patterns of our participants in a 20-minute session. As Dr. Yee mentioned, the normative data of our participants were homogenous in our paper as in previous studies (1). This would already exclude a diurnal visual problem. Participant 7 behaved just like the other participants during the baseline condition.
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Philip P. Effects of Coffee and Napping on Nighttime Highway Driving. Ann Intern Med. 2007;146:229. doi: 10.7326/0003-4819-146-3-200702060-00016

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Published: Ann Intern Med. 2007;146(3):229.

DOI: 10.7326/0003-4819-146-3-200702060-00016

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2007 American College of Physicians
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704

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