How do you feel?
Does your heart pound because you feel afraid, or do you feel afraid because your heart is racing? This question is the crux of a century-old controversy, stemming from a proposal by William James. A recent neuroimaging study addresses this issue and suggests that the functional connectivity of the insula could provide the key to resolving the debate.
Wellcome Department of Imaging Neuroscience, 12 Queen Square, WC1N 3BG, London, UK
John S.
JS
Morrisj