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@ARTICLE{Kohl:861154,
author = {Kohl, Simon H. and Veit, Ralf and Spetter, Maartje S. and
Günther, Astrid and Rina, Andriani and Lührs, Michael and
Birbaumer, Niels and Preissl, Hubert and Hallschmid,
Manfred},
title = {{R}eal-time f{MRI} neurofeedback training to improve eating
behavior by self-regulation of the dorsolateral prefrontal
cortex: {A} randomized controlled trial in overweight and
obese subjects},
journal = {NeuroImage},
volume = {191},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2019-01709},
pages = {596-609},
year = {2019},
abstract = {Obesity is associated with altered responses to food
stimuli in prefrontal brain networks that mediate inhibitory
control of ingestive behavior. In particular, activity of
the dorsolateral prefrontal cortex (dlPFC) is reduced in
obese compared to normal-weight subjects and has been linked
to the success of weight-loss dietary interventions. In a
randomized controlled trial in overweight/obese subjects, we
investigated the effect on eating behavior of volitional
up-regulation of dlPFC activity via real-time functional
magnetic resonance imaging (fMRI) neurofeedback
training.Thirty-eight overweight or obese subjects (BMI
25–40 kg/m2) took part in fMRI neurofeedback training
with the aim of increasing activity of the left dlPFC (dlPFC
group; n = 17) or of the visual cortex (VC/control
group; n = 21). Participants were blinded to group
assignment. The training session took place on a single day
and included three training runs of six trials of
up-regulation and passive viewing. Food appraisal and snack
intake were assessed at screening, after training, and in a
follow-up session four weeks later.Participants of both
groups succeeded in up-regulating activity of the targeted
brain area. However, participants of the control group also
showed increased left dlPFC activity during up-regulation.
Functional connectivity between dlPFC and ventromedial PFC,
an area that processes food value, was generally increased
during up-regulation compared to passive viewing. At
follow-up compared to baseline, both groups rated pictures
of high-, but not low-calorie foods as less palatable and
chose them less frequently. Actual snack intake remained
unchanged but palatability and choice ratings for chocolate
cookies decreased after training.We demonstrate that one
session of fMRI neurofeedback training enables individuals
with increased body weight to up-regulate activity of the
left dlPFC. Behavioral effects were observed in both groups,
which might have been due to dlPFC co-activation in the
control group and, in addition, unspecific training effects.
Improved dlPFC-vmPFC functional connectivity furthermore
suggested enhanced food intake-related control mechanisms.
Neurofeedback training might support therapeutic strategies
aiming at improved self-control in obesity, although the
respective contributions of area-specific mechanisms and
general regulation effects are in need of further
investigation.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30798010},
UT = {WOS:000462145700052},
doi = {10.1016/j.neuroimage.2019.02.033},
url = {https://juser.fz-juelich.de/record/861154},
}