The tendency to use drugs depends on each individual person. Not all those who have access to drugs become addicts, therefore there may be personality characteristics that influence their use. One such characteristic is the pursuit of new sensations found in people that like looking for risk at all times. Although some studies have already suggested a link between these people and a higher probability of becoming drug addicts, shopaholics or gambling addicts, until now no study has objectively found a direct relationship without the influence of other psychological factors, such as anxiousness.
A team of researchers from the Universitat Autònoma de Barcelona, directed by Roser Nadal and Antonio Armario, has shown scientifically through experiments with rats that addiction to morphine is related to a tendency to explore perseveringly and to search for new sensations. Using mazes and cages, the scientists observed in their experiments that the animals with a greater tendency to explore are more inclined towards an addiction to morphine.
The researchers had classified the rodents according to whether they had a tendency to explore repeatedly a new situation (persevering explorers) or they became disinterested in the new situation within a short amount of time. This was done by placing them in a circular corridor they had never seen before and observing their behaviour. Only the persevering animals that persistently explored their new environment had a preference for being administered morphine. It was also observed that other personality characteristics in the rats, such as anxiousness or fear, are unrelated to morphine addiction. This is the first time a relationship has been observed between addiction and a tendency to explore without other characteristics appearing that could also increase the likelihood of an addiction.
Octavi López Coronado | alfa
The balancing act: An enzyme that links endocytosis to membrane recycling
07.12.2016 | National Centre for Biological Sciences
Transforming plant cells from generalists to specialists
07.12.2016 | Duke University
In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
Even back in the 1990s, scientists were comparing materials processing with nanosecond, picosecond and femtosesecond pulses. The result was surprising:...
Have you ever wondered how you see the world? Vision is about photons of light, which are packets of energy, interacting with the atoms or molecules in what...
A multi-institutional research collaboration has created a novel approach for fabricating three-dimensional micro-optics through the shape-defined formation of porous silicon (PSi), with broad impacts in integrated optoelectronics, imaging, and photovoltaics.
Working with colleagues at Stanford and The Dow Chemical Company, researchers at the University of Illinois at Urbana-Champaign fabricated 3-D birefringent...
In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
“Our Quantum droplets are in the gas phase but they still drop like a rock,” explains experimental physicist Francesca Ferlaino when talking about the...
The Max Planck Institute for Physics (MPP) is opening up a new research field. A workshop from November 21 - 22, 2016 will mark the start of activities for an innovative axion experiment. Axions are still only purely hypothetical particles. Their detection could solve two fundamental problems in particle physics: What dark matter consists of and why it has not yet been possible to directly observe a CP violation for the strong interaction.
The “MADMAX” project is the MPP’s commitment to axion research. Axions are so far only a theoretical prediction and are difficult to detect: on the one hand,...
16.11.2016 | Event News
01.11.2016 | Event News
14.10.2016 | Event News
07.12.2016 | Health and Medicine
07.12.2016 | Life Sciences
07.12.2016 | Health and Medicine