Psychology & Psychiatry

Researchers find frustration is an additional factor of addiction

A team from The University of Texas Medical Branch at Galveston (UTMB) focused on drug addiction research have pioneered a new way to study frustration as a factor in substance use disorders. The study was published in the ...

Neuroscience

Mental map of space is stabilized by sugar coated neurons

A reliable sense of space is essential for daily life and memory formation. Removing sugar coated proteins around neurons in the brains' internal gps makes the mental map of space unstable, shows a study published in the ...

Psychology & Psychiatry

Cannabis use blunts stress reactivity in female rats

Female rats that inhaled vaporized cannabis daily for a month developed a blunted physiological response to stress, according to a new study by Washington State University researchers.

Cardiology

Why failing hearts love hard workouts

"Our research on rats with heart failure shows that exercise reduces the severity of the disease, improves heart function and increases work capacity. And the intensity of the training is really importance to achieve this ...

Diseases, Conditions, Syndromes

Rats also capable of transmitting hantavirus

Universitätsmedizin Berlin have confirmed Germany's first-ever case of animal-to-human transmission involving a specific species of virus known as the 'Seoul virus.' Working alongside colleagues from Friedrich-Loeffer-Institut ...

Neuroscience

Compounds block stress-enhanced nicotine intake in rats

Stress is a major cause of relapse after people quit smoking. Worrying situations, such as money or relationship problems, can affect neurotransmitter levels in the brain, leading former smokers to reach for a cigarette. ...

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Rat

50 species

Stenomys Thomas, 1910

Rats are various medium-sized, long-tailed rodents of the superfamily Muroidea. "True rats" are members of the genus Rattus, the most important of which to humans are the black rat, Rattus rattus, and the brown rat, Rattus norvegicus. Many members of other rodent genera and families are also called rats and share many characteristics with true rats.

Rats are typically distinguished from mice by their size; rats are generally large muroid rodents, while mice are generally small muroid rodents. The muroid family is very large and complex, and the common terms rat and mouse are not taxonomically specific. Generally, when someone discovers a large muroid, its common name includes the term rat, while if it is small, the name includes the term mouse - scientifically, the terms are not confined to members of the Rattus and Mus genera. Compare the taxonomic classification of the Pack rat and Cotton mouse.

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