Neurobehavioral correlates of gestational weight retention

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Description: This study draws from the existing Diet, Weight change, and Obesity in Pregnancy (DWOP) (HHSN275201300015C) study39. At six months postpartum, 70 women will complete three fMRI paradigms and behavioral tasks. The women will be trained to associated logos with either a hyper-palatable milkshake or a sub-palatable milkshake, and then be exposed to a probabilistic reward paradigm in which 30% of the events will produce a negative prediction error. The women will also be shown sets of hyper-palatable and normo-palatable foods to be viewed passively. Women will complete behavioral paradigms to test food reinforcement40, impulsivity41 and ad libitum consumption of both milkshakes. The milkshakes will be in bottles marked with the logos from the training session. Height and weight will be measured at the above scan assessment (6 months postpartum) and again at one-year postpartum.

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  • Aims and hypotheses

    Aim 1: A) To examine and compare how food responsivity and impulsivity are associated with neural response to food images. B) To examine and compare h...

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