Fear and pain slow the brain

aSchool of Psychology, University of Birmingham, Birmingham, United Kingdom bCentre for Human Brain Health (CHBH), University of Birmingham, Birmingham, United Kingdom cDepartment of Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, MD, United States dDepartment of Medical Biophysics, Schulich School of Medicine & Dentistry, University of Western Ontario, London, ON, Canada Sponsorships or competing interests that may be relevant to content are disclosed at the end of this article.