Stomach MRI images combined with functional fMRI of the brain activity have provided scientists new insight into how the brain listens to the stomach during eating
Stomach MRI images combined with functional fMRI of the brain activity have provided scientists new insight into how the brain listens to the stomach during eating. Research from Wageningen University in the Netherlands shows - for the first time - real time data of the brain, the stomach, and people's feelings of satiety measured simultaneously during a meal, in a study to be reported this week at the annual meeting of the Society for the Study of Ingestive Behavior, held in Porto, Portugal. The researchers collected data from 19 participants during two separate sessions with different consumption procedures and found that a simple change like drinking more water can alter messages from the stomach interpreted as fullness by the brain. This new research approach can be used to investigate the interplay between satiety feelings, volume of the stomach and activity in the brain.
In the experiment, participants drank a milk-shake on an empty stomach, which was followed by a small (50 mL) or large glass of water (350 mL). MRI images were used to see how the different amounts of water affected stretching of the stomach: the large glass of water doubled the stomach content compared to the small glass. Together with this larger volume subjects reported to have less hunger and felt fuller.
This novel approach - combining information obtained simultaneously from MRI images of the stomach, feelings reported by the subjects, and brain scans - can offer new insights which would otherwise have been unknown, for example that activation in a brain area called the mid-temporal gyrus seems is in some way influenced by the increased water load in this experiment. The Wageningen University scientists developed the combined MRI method as part of the European Nudge-it research project, which seeks to discover simple changes that promote healthier eating. They will use it to search for a brain signature that leads people to decide to stop eating, to determine how strategies like water with a meal can be effective at feeling fuller sooner.
"Combining these types of measurements is difficult, because MRI scanners are usually set-up to perform only one type of scan. We've been able to very quickly switch the scanner from one functionality to another to do this type of research" says Guido Camps, lead author of the study. "In conclusion, we've found that simply adding water increases stomach distension, curbs appetite in the short term and increases regional brain activity."
Activation in the insula is increased when the stomach is distended more.
The same subject with either the small (left) or large volume of water (right) in the stomach (delineated in red).
Research: "Just add water: how water affects gastric distension, appetite and brain activity"
G CAMPS, R VEIT, M MARS, C DE GRAAF, P SMEETS
Melissa Szkodzinska | EurekAlert!
Amazingly flexible: Learning to read in your thirties profoundly transforms the brain
26.05.2017 | Max-Planck-Institut für Kognitions- und Neurowissenschaften
Fixating on faces
26.01.2017 | California Institute of Technology
HZI researchers identify a protein in Salmonella that contributes to the assembly of the motility apparatus – a possible target for novel medications
Salmonellae are particularly resistant to antibiotics since they possess not only one, but two membranes that protect them from harmful substances. This makes...
Spectrally narrow x-ray pulses may be “sharpened” by purely mechanical means. This sounds surprisingly, but a team of theoretical and experimental physicists developed and realized such a method. It is based on fast motions, precisely synchronized with the pulses, of a target interacting with the x-ray light. Thereby, photons are redistributed within the x-ray pulse to the desired spectral region.
A team of theoretical physicists from the MPI for Nuclear Physics (MPIK) in Heidelberg has developed a novel method to intensify the spectrally broad x-ray...
Physicists working with researcher Oriol Romero-Isart devised a new simple scheme to theoretically generate arbitrarily short and focused electromagnetic fields. This new tool could be used for precise sensing and in microscopy.
Microwaves, heat radiation, light and X-radiation are examples for electromagnetic waves. Many applications require to focus the electromagnetic fields to...
Strong light-matter coupling in these semiconducting tubes may hold the key to electrically pumped lasers
Light-matter quasi-particles can be generated electrically in semiconducting carbon nanotubes. Material scientists and physicists from Heidelberg University...
Fraunhofer IPA has developed a proximity sensor made from silicone and carbon nanotubes (CNT) which detects objects and determines their position. The materials and printing process used mean that the sensor is extremely flexible, economical and can be used for large surfaces. Industry and research partners can use and further develop this innovation straight away.
At first glance, the proximity sensor appears to be nothing special: a thin, elastic layer of silicone onto which black square surfaces are printed, but these...
04.08.2017 | Event News
26.07.2017 | Event News
21.07.2017 | Event News
07.08.2017 | Information Technology
04.08.2017 | Physics and Astronomy
04.08.2017 | Materials Sciences