Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Memories Influence Choice of Food

22.05.2015

The stronger our memory is of a certain food, the more likely we are to choose it – even if it is the more unattractive option. Psychologists at the University of Basel conducted a study on how memory influences our choices by offering various foods and using scans to track brain activity. The researchers were able to show that the influence of memory is mediated by increasing communication between the relevant brain areas. The study has been published in the scientific journal Neuron.

Many of our everyday decisions such as “What present should I give my girlfriend?” or “Where shall we go to eat?” are based on the retrieval of relevant information from memory. The neural and cognitive mechanism of this decision-making process had not been studied in depth until now. What is known is that these brain processes involve the hippocampus, a classic memory region, and the ventromedial prefrontal cortex in the frontal lobe, a decision-making region.

Choice of snacks

In the study, a team of psychologists at the University of Basel asked 30 hungry young people to rate 48 snacks – such as crisps, chocolate bars, pretzels and wine gums – in order of preference. The snacks were presented on a computer screen in association with a particular location. The subjects then went into a magnetic resonance image scanner and were asked to choose repeatedly between two snacks, for which only the location was shown. The subjects were thus forced to recall the snack associated with the location.

The results showed that the subjects tended to prefer the snacks that they were able to recall better. Furthermore, they chose the snacks they could recall better even if they had rated them lower in the initial task and therefore considered them less attractive. Only extremely unattractive snacks were rejected even if they were remembered. The control group of 30 subjects was shown the snacks directly on the screen and its choices corresponded with the initial ratings.

Model and brain scans

The research team used functional magnetic resonance imaging (fMRI) to examine the neural mechanisms of memory-based decisions and developed a mathematical model to represent the decision-making process and the influence of memory.

This model enabled the team to determine the strength of memory-based activation during storage in the hippocampus. An analysis of the activation during the decision-making process showed an increase in communication between the hippocampus and the ventromedial prefrontal cortex.

“Our study builds a bridge between two central research fields of psychology, that is, memory and decision-making research,” says Dr. Sebastian Gluth, lead author of the study. The combination of mathematical modeling and brain scans also provides an accurate understanding of how the areas of the brain are linked to the psychological sub-processes and how these areas interact with one another.

The study was conducted in cooperation with Prof. Jörg Rieskamp (University of Basel, Faculty of Psychology, Economic Psychology) and Dr. Tobias Sommer and Dr. Christian Büchel from the Institute of Systems Neuroscience at the University Medical Center Hamburg-Eppendorf.

Original article:
Sebastian Gluth, Tobias Sommer, Jörg Rieskamp and Christian Büchel
Effective connectivity between hippocampus and ventromedial prefrontal cortex controls preferential choices from memory
Neuron

Further information:
Dr. Sebastian Gluth, University of Basel, Faculty of Psychology, tel. +41 61 267 06 06, email: sebastian.gluth@unibas.ch

Olivia Poisson | Universität Basel
Further information:
http://www.unibas.ch

More articles from Studies and Analyses:

nachricht Real-time feedback helps save energy and water
08.02.2017 | Otto-Friedrich-Universität Bamberg

nachricht The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Biocompatible 3-D tracking system has potential to improve robot-assisted surgery

17.02.2017 | Medical Engineering

Real-time MRI analysis powered by supercomputers

17.02.2017 | Medical Engineering

Antibiotic effective against drug-resistant bacteria in pediatric skin infections

17.02.2017 | Health and Medicine

VideoLinks
B2B-VideoLinks
More VideoLinks >>>