Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Brain waves behind indecisiveness

20.08.2015

Some people find it difficult to make decisions. In a new study, neuroeconomists from the University of Zurich now reveal that the intensity of the communication between different regions of the brain dictates whether we are indecisive or not.

It’s the same old story: You’re in a restaurant and can’t make up your mind what to order. After studying the menu for some time and many discussions, you eventually choose the steak. But you can’t relax during the meal and keep wondering whether you should have gone for the veal after all.


Preference-based decisions were less stable if the information flow between the two brain regions was disrupted.

UZH

Such difficulties with decisions crop up in all aspects of life, not only food. However, they predominantly affect preference-based decisions, i.e. questions like «what do I prefer – melon or cherries?» Purely sensory decisions based on sensorial information such as «what is bigger – melon or cherry?» are less prone to indecisiveness.

The more intensive the information flow, the more decisive

How come some people are so uncertain of their preferences and keep making new choices while others know exactly what they like and want? A team headed by Professor Christian Ruff, a neuroeconomist from the University of Zurich, set about investigating this question.

The Zurich researchers discovered that the precision and stability of preference decisions do not only depend on the strength of the activation of one or more brain regions. Instead, the key for stable preference choices is the intensity of the communication between two areas of the brain which represent our preferences or are involved in spatial orientation and action planning.

The researchers used transcranial alternating current stimulation, a non-invasive brain stimulation method that enables generation of coordinated oscillations in the activity of particular brain regions. The test subjects did not realize that they were being stimulated.

Using this technique, the researchers intensified or reduced the information flow between the prefrontal cortex located directly below the forehead and the parietal cortex just above both ears. The test subjects had to make preference-based or purely sensory decisions about food.

«We discovered that preference-based decisions were less stable if the information flow between the two brain regions was disrupted. Our test subjects were therefore more indecisive. For the purely sensory decisions, however, there was no such effect,» explains Ruff. «Consequently, the communication between the two brain regions is only relevant if we have to decide whether we like something and not when we make decisions based on objective facts.» There was no evidence of any gender-specific effects in the experiments.

It was not possible to make the decisions more stable by intensifying the information flow. However, the study participants were young, healthy test subjects with highly developed decision-making skills. On the other hand, the results of the study could be used for therapeutic measures in the future – such as in patients who suffer from a high degree of impulsiveness and indecisiveness in the aftermath of brain disorders.

Literature:

Rafael Polanıa, Marius Moisa, Alexander Opitz, Marcus Grueschow & Christian C. Ruff. The precision of value-based choices depends causally on fronto-parietal phase coupling. Nature communications, August 20, 2015. DOI: 10.1038/ncomms9090

Weitere Informationen:

http://www.mediadesk.uzh.ch/articles/2015/fuer-wankelmuetigkeit-sind-die-hirnstr...

Evelyne Brönnimann | Universität Zürich

More articles from Studies and Analyses:

nachricht The importance of biodiversity in forests could increase due to climate change
17.11.2017 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig

nachricht Win-win strategies for climate and food security
02.10.2017 | International Institute for Applied Systems Analysis (IIASA)

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: A “cosmic snake” reveals the structure of remote galaxies

The formation of stars in distant galaxies is still largely unexplored. For the first time, astron-omers at the University of Geneva have now been able to closely observe a star system six billion light-years away. In doing so, they are confirming earlier simulations made by the University of Zurich. One special effect is made possible by the multiple reflections of images that run through the cosmos like a snake.

Today, astronomers have a pretty accurate idea of how stars were formed in the recent cosmic past. But do these laws also apply to older galaxies? For around a...

Im Focus: Visual intelligence is not the same as IQ

Just because someone is smart and well-motivated doesn't mean he or she can learn the visual skills needed to excel at tasks like matching fingerprints, interpreting medical X-rays, keeping track of aircraft on radar displays or forensic face matching.

That is the implication of a new study which shows for the first time that there is a broad range of differences in people's visual ability and that these...

Im Focus: Novel Nano-CT device creates high-resolution 3D-X-rays of tiny velvet worm legs

Computer Tomography (CT) is a standard procedure in hospitals, but so far, the technology has not been suitable for imaging extremely small objects. In PNAS, a team from the Technical University of Munich (TUM) describes a Nano-CT device that creates three-dimensional x-ray images at resolutions up to 100 nanometers. The first test application: Together with colleagues from the University of Kassel and Helmholtz-Zentrum Geesthacht the researchers analyzed the locomotory system of a velvet worm.

During a CT analysis, the object under investigation is x-rayed and a detector measures the respective amount of radiation absorbed from various angles....

Im Focus: Researchers Develop Data Bus for Quantum Computer

The quantum world is fragile; error correction codes are needed to protect the information stored in a quantum object from the deteriorating effects of noise. Quantum physicists in Innsbruck have developed a protocol to pass quantum information between differently encoded building blocks of a future quantum computer, such as processors and memories. Scientists may use this protocol in the future to build a data bus for quantum computers. The researchers have published their work in the journal Nature Communications.

Future quantum computers will be able to solve problems where conventional computers fail today. We are still far away from any large-scale implementation,...

Im Focus: Wrinkles give heat a jolt in pillared graphene

Rice University researchers test 3-D carbon nanostructures' thermal transport abilities

Pillared graphene would transfer heat better if the theoretical material had a few asymmetric junctions that caused wrinkles, according to Rice University...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Ecology Across Borders: International conference brings together 1,500 ecologists

15.11.2017 | Event News

Road into laboratory: Users discuss biaxial fatigue-testing for car and truck wheel

15.11.2017 | Event News

#Berlin5GWeek: The right network for Industry 4.0

30.10.2017 | Event News

 
Latest News

NASA detects solar flare pulses at Sun and Earth

17.11.2017 | Physics and Astronomy

NIST scientists discover how to switch liver cancer cell growth from 2-D to 3-D structures

17.11.2017 | Health and Medicine

The importance of biodiversity in forests could increase due to climate change

17.11.2017 | Studies and Analyses

VideoLinks
B2B-VideoLinks
More VideoLinks >>>