# The Influences of Eating and Fasting on Inhibitory Control in Bulimia Nervosa: A Computational Neuroimaging Study

> **NIH NIH K23** · ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI · 2021 · $191,894

## Abstract

PROJECT SUMMARY/ABSTRACT
Bulimia nervosa (BN) is an often-chronic eating disorder associated with high rates of disability and premature
death. There is a critical need to identify brain-based factors that perpetuate BN symptoms and that may serve
as mechanistic targets for novel treatments. Most studies have focused on binge eating and purging behaviors
in BN and have linked these symptoms to inhibitory control deficits and reduced frontostriatal activation.
However, individuals with BN typically oscillate between states of problematic under- and over-control—
excessive eating and restricted intake/fasting. Neurobiological research to date has failed to account for this
oscillation. The goal of this mentored patient-oriented research career development award is to better
understand the computational underpinnings of inhibitory control in these two states in BN. Specifically, the
proposed study combines functional magnetic resonance imaging (fMRI) with dynamic Bayesian modeling to
examine whether eating and fasting abnormally impact how the brains of women with BN prepare for and exert
inhibitory control. This study will compare neural responses of 30 women with BN to those of 30 group-
matched controls during an inhibitory control paradigm after a 16-h fast and after a standardized meal. This
well-controlled design will test the following hypotheses: 1) In BN, frontostriatal signals for the expected need
to inhibit, Bayesian prediction error signals, and activation during response inhibition are abnormally blunted in
a fed state, and abnormally enhanced in a fasted state (Aim 1); 2) Altered response to the fed state promotes
out-of-control eating and purging, whereas altered response to the fasted state perpetuates prolonged
restriction between binge/purge episodes (Aim 2). Data from this project will substantiate an explanatory model
of BN symptoms, pinpoint which components of the inhibition process are altered in BN, and identify states in
which control-focused interventions may be most effective. This work ultimately will inform precisely targeted
and context-dependent interventions that can more effectively interrupt the cycle of binge eating, purging, and
restriction. The study will also serve as a vehicle for mentorship and hands-on training in concepts and skills
critical to the candidate’s next steps. Specifically, within a resource-rich environment, the proposed training will
give the candidate new expertise in three domains: 1) repeated-measures neuroimaging methods and
associated analyses, 2) neurocomputational modeling and computational psychiatry, and 3) the neurobiology
of the full spectrum of disordered eating symptomatology in BN. This project and the completion of training
goals will launch the candidate’s independent career in the translational neuroscience of eating disorders and
lay groundwork for high-impact studies that combine neuroimaging and sophisticated analytic approaches to
improve eating disorder diagnosis and trea...

## Key facts

- **NIH application ID:** 10208679
- **Project number:** 5K23MH118418-03
- **Recipient organization:** ICAHN SCHOOL OF MEDICINE AT MOUNT SINAI
- **Principal Investigator:** Laura A. Berner
- **Activity code:** K23 (R01, R21, SBIR, etc.)
- **Funding institute:** NIH
- **Fiscal year:** 2021
- **Award amount:** $191,894
- **Award type:** 5
- **Project period:** 2019-08-01 → 2024-07-31

## Primary source

NIH RePORTER: https://reporter.nih.gov/project-details/10208679

## Citation

> US National Institutes of Health, RePORTER application 10208679, The Influences of Eating and Fasting on Inhibitory Control in Bulimia Nervosa: A Computational Neuroimaging Study (5K23MH118418-03). Retrieved via AI Analytics 2026-05-24 from https://api.ai-analytics.org/grant/nih/10208679. Licensed CC0.

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