BMI not WHR modulates BOLD fMRI responses in a sub-cortical reward network when participants judge the attractiveness of human female bodies

Holliday, Ian E., Longe, Olivia A., Thai, N. Jade, Hancock, Peter J.B. and Tovée, Martin J. (2011). BMI not WHR modulates BOLD fMRI responses in a sub-cortical reward network when participants judge the attractiveness of human female bodies. PLoS ONE, 6 (11),

Abstract

In perceptual terms, the human body is a complex 3d shape which has to be interpreted by the observer to judge its attractiveness. Both body mass and shape have been suggested as strong predictors of female attractiveness. Normally body mass and shape co-vary, and it is difficult to differentiate their separate effects. A recent study suggested that altering body mass does not modulate activity in the reward mechanisms of the brain, but shape does. However, using computer generated female body-shaped greyscale images, based on a Principal Component Analysis of female bodies, we were able to construct images which covary with real female body mass (indexed with BMI) and not with body shape (indexed with WHR), and vice versa. Twelve observers (6 male and 6 female) rated these images for attractiveness during an fMRI study. The attractiveness ratings were correlated with changes in BMI and not WHR. Our primary fMRI results demonstrated that in addition to activation in higher visual areas (such as the extrastriate body area), changing BMI also modulated activity in the caudate nucleus, and other parts of the brain reward system. This shows that BMI, not WHR, modulates reward mechanisms in the brain and we infer that this may have important implications for judgements of ideal body size in eating disordered individuals.

Publication DOI: https://doi.org/10.1371/journal.pone.0027255
Divisions: Life & Health Sciences > Psychology
Life & Health Sciences > Clinical and Systems Neuroscience
Life & Health Sciences > Aston Brain Centre
Life & Health Sciences
Life & Health Sciences > Centre for Vision and Hearing Research
Additional Information: © 2011 Holliday et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Uncontrolled Keywords: beauty,body constitution,body mass index,cerebral cortex,female,humans,magnetic resonance imaging,male,principal component analysis,visual perception,waist-hip ratio,Agricultural and Biological Sciences(all),Biochemistry, Genetics and Molecular Biology(all),Medicine(all)
Full Text Link: http://www.plos ... al.pone.0027255
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
Published Date: 2011-11-15
Authors: Holliday, Ian E.
Longe, Olivia A.
Thai, N. Jade
Hancock, Peter J.B.
Tovée, Martin J.

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