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The Journal of Neuroscience, July 29, 2009, 29(30):9450-9457; doi:10.1523/JNEUROSCI.1951-09.2009

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Behavioral/Systems/Cognitive
Get Aroused and Be Stronger: Emotional Facilitation of Physical Effort in the Human Brain

Liane Schmidt,^1,5 Marie-Laure Cléry-Melin,^1,5 Gilles Lafargue,^6,7 Romain Valabrègue,^1,2,5 Philippe Fossati,^3,4,5 Bruno Dubois,^1,4,5 and Mathias Pessiglione^1,2,5

¹Institut du Cerveau et de la Moëlle épinière (ICM), INSERM UMRS 975, ²Centre de NeuroImagerie de Recherche (CENIR), ³CNRS UMR 7593, and ⁴Hôpital Pitié-Salpêtrière, Assistance Publique–Hôpitaux de Paris, 75013 Paris, France, ⁵Université Pierre et Marie Curie (Paris 6), 75005 Paris, France, ⁶CNRS UMR 8160, 59037 Lille, France, and ⁷Université Lille Nord-de-France (Lille 3), 59653 Villeneuve d'Asq, France

Correspondence should be addressed to Mathias Pessiglione at the above address. Email: mathias.pessiglione{at}gmail.com

Effort magnitude is commonly thought to reflect motivation, but little is known about the influence of emotional factors. Here, we manipulated the emotional state of subjects, via the presentation of pictures, before they exerted physical effort to win money. After highly arousing pictures, subjects produced more force and reported lower effort sensation, regardless of monetary incentives. Functional neuroimaging revealed that emotional arousal, as indexed by postscan ratings, specifically correlated with bilateral activity in the ventrolateral prefrontal cortex. We suggest that this region, by driving the motor cortex, constitutes a brain pathway that allows emotional arousal to facilitate physical effort.

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Received April 24, 2009; accepted May 27, 2009.

Correspondence should be addressed to Mathias Pessiglione at the above address. Email: mathias.pessiglione{at}gmail.com

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