Sentences with phrase «rat brain studies»

It was courageous for him to announce new findings based on rat brain studies from Steve Maier that suggest that his own theory of learned helplessness is NOT in fact correct.

Not exact matches

A new study, conducted by the U.S. National Toxicology Program, found that rats consistently exposed to radiofrequency radiation from cellphones were more likely to develop malignant tumors in the brain and heart.

A key 1970s industry - sponsored study initially sparked concerns that aspartame caused brain tumors in rats, but the FDA convinced an independent review panel to reverse its conclusion that aspartame was unsafe.

Some of the medical studies I used as a reference are: Caloric restriction and intermittent fasting: Two potential diets for successful brain aging and Dietary Factors, Hormesis and Health, found on the US National Library of Medicine Site, Cardioprotection by Intermittent Fasting in Rats on the American Heart Association Site and Effect of Ramadan intermittent fasting on aerobic and anaerobic performance and perception of fatigue in male elite judo athletes from the Journal of Strength and conditioning research.

Another study of degu rats discovered that babies» brains developed normally if the father rat stayed in the nest, but broke down at the level of synapses — in areas of the brain that influence decision - making and emotions — when the father was removed.

Rats are often used to study how mammalian brains work and many effects are similar in human brains.

Animals studies show us that regularly separating baby from mother alters the brain (the first 10 days of life for rats is comparable to the first 6 months for human babies).

A study of fat swimming and running rats indicated that exercise induces brain chemistry changes that decrease appetite

This study was conducted in samples taken from rat brains, but sleep is thought to induce backward firing in human neurons, too.

A study in rats shows that eating a certain type of fat produces a hormone that helps the brain cement short - term memories into long - term ones.

Carmen Sandi remains cautious, since the study involved rats rather than humans; after all, brain function is just one of the many elements that influence social dynamics.

«However, this is a rare study measuring the direct effect of high - fat diets of pregnant rats on the brain function of their offspring, and it provides further incentive for childbearing women to eat a varied and nutritious diet.»

That was the question researchers addressed in the study Intralaminar Thalamic Deep Brain Stimulation Ameliorates the Memory Deficit and the Dendritic Regression in β - Amyloid Infusion Rats, led by Sheng - Tzung Tsai, MD..

In a separate study, Paul Micevych and his colleagues at the University of California, Los Angeles, investigated the effect on the brain of the female rat's sexual cycle — characterised by an increase in oestradiol production every four days.

In another study scheduled to be presented at the neuroscience meeting — 21 brain organoid papers are on tap — researchers led by Dr. Isaac Chen, a neurosurgeon at the University of Pennsylvania, implanted human cerebral organoids into the brains of 11 adult rats, specifically the secondary visual cortex.

NEW ROLE A kind of brain cell called an astrocyte (shown) may help nerve cells in the hippocampus form traumatic memories, a study in rats suggests.

Now, a study finds that those irresistible sweet and salty concoctions may also change the way brains are wired — at least in rats.

Studying laboratory rats, Rutgers scientists found, however, that within a month after experimental brain injury, the number of new brain cells declined dramatically, below the numbers of new neurons that would have been detected if an injury had not occurred.

«This study, carried out using laboratory rats modeling stroke, demonstrated that ischemic stroke — in both its subacute and chronic stages — damages the BSCB in a variety of ways, creating a toxic environment in the spinal cord that can lead to further disability and exacerbate disease pathology,» said study lead author Dr. Svitlana Garbuzova - Davis, associate professor in USF's Center of Excellence for Aging and Brain Repair, Department of Neurosurgery and Brain Repair.

In addition, brain imaging studies in rats and humans have shown alterations in gray matter volume and white matter integrity in the brain caused by the effects of chronic pain.

In addition to imaging heavy - ion tracks, Vazquez has studied the effect of chronic cosmic - ray exposure on the brains of rats, as measured by their ability to move around in a box.

He initiated studies on the impact of music alone or music coupled with an enriched environment (a space filled with toys) on the emotional responses of rats and associated changes in their brains.

Because they can't ethically subject youth to alcohol to study its effects, researchers use the developing brains of rats to understand the effects of «intermittent alcohol exposure» — the equivalent of drinking to a blood - alcohol level of.08 (the legal limit for driving while impaired) three or four nights a week.

I removed the brains of the rats, cut them in half and studied one half microscopically.

In a study led by Duke Health and published in the journal Alcoholism: Clinical and Experimental Research, scientists demonstrate in rats that a short duration of the drug donepezil can reverse both structural and genetic damage that bouts of alcohol use causes in neurons, or nerve cells, in the young brain.

In a series of studies beginning in 1994, neuroscientist Elizabeth Gould of Rockefeller University in New York City and her co-workers extended this picture, showing that stressed rats release adrenal hormones that suppress new nerve cell production in the brain.

Now, a study in rats pinpoints the «tickle center» of the mammalian brain, showing for the first time that stimulating neurons in that region can elicit a paroxysm of ultrasonic squeaks, the rat version of human laughter.

In past studies to develop a new animal model for the brain events that support motor development, neurophysiologist Martin Garwicz of Lund University in Sweden and his colleagues discovered that the schedules by which ferrets and rats acquire various motor skills, such as crawling and walking, are strikingly similar to each other; the progress simply happens faster for rats.

Now, experiments with rats and mice have shown that insulin increases dopamine levels by 20 % to 55 % in the striatal region, a brain area associated with pleasure and decision - making, according to a study published on 27 October in Nature Communications.

University of Alabama at Birmingham researchers have found that amounts of this microRNA are significantly elevated in the brains of experimental rats with induced depression from corticosterone treatment, in the post-death brains of humans diagnosed with MDD and in peripheral blood serum from living patients with MDD, according to a study by led by Yogesh Dwivedi, Ph.D., the Elesabeth Ridgely Shook Endowed Professor and director of Translational Research, UAB Mood Disorders Program, Department of Psychiatry.

The virtual world used in the study was very similar to virtual reality environments used by humans, and neurons in a rat's brain would be very hard to distinguish from neurons in the human brain, Mehta said.

To test whether the hippocampus could actually form spatial maps using only visual landmarks, Mehta's team devised a noninvasive virtual reality environment and studied how the hippocampal neurons in the brains of rats reacted in the virtual world without the ability to use smells and sounds as cues.

A new study conducted in rats offers clues about how teen drinking alters brain chemistry, suggesting early alcohol use has long - term effects on decision making.

The study described in the second paper used groups of three or four rats whose brains were interconnected via microwire arrays in the somatosensory cortex of the brain and received and transmitted information via those wires.

In a 2014 study in rats, researchers at the University of California found that the neurons in a brain region associated with spatial learning behaved completely differently in virtual environments compared to in real ones, with more than half of the neurons shutting down while in VR.

A study of rats published at the same time in the scientific journal Addiction Biology adds to the understanding of how OSU6162 works, as it shows that rats that voluntarily consumed alcohol for almost a year had lower levels of dopamine in their brain reward system than rats that had never drunk alcohol.

When the scientists studied a region of the rats» brains called the dorsal striatum, they also found striking differences between the two groups.

After the study on invertebrate brains, Strausfeld and Wolff will embark on investigating vertebrates such as rats, birds, reptiles, amphibians and fish.

«Because we had access to these rats that were bred for certain traits, and were able to control for environmental factors, such as the amount of drug exposure, we could assess differences in the brain both before and after the rats became addicted,» says Shelly Flagel, Ph.D., lead author of the new study and an assistant professor of psychiatry at U-M.

Now researchers reporting in the Cell Press journal Neuron on July 18 show in a study conducted in rats that even a single exposure to nicotine temporarily changes how the brain's reward system responds to alcohol and increases the reinforcing properties of alcohol via stress hormones.

They studied brain samples from mice and rats that were raised with chronic exposure to nicotine and had developed nicotine dependence — similar to a heavy smoker going through two packs a day.

But the authors of a new study on dying rats make a bold claim: After cardiac arrest, the rodents» brains enter a state similar to heightened consciousness in humans.

«Scientists manipulate consciousness in rats: Study may guide deep brain stimulation therapies used for neurological disorders.»

Brown University brain scientists didn't just study how recognition of familiarity and novelty arise in the mammalian brain, they actually took control, inducing rats to behave as if images they'd seen before were new, and images they had never seen were old.

A series of studies have previously shown that the parasite affects the brain of infected rats so that they lose fear of cats and even become attracted to cats» smell, making them an easy prey.

This study, led by Soo Young Kim and performed at the University of Texas at Austin and the University of California, Berkeley, found that such compensation produces structural brain changes at the site of the stroke in rats, limiting recovery of the injured side.

They then studied images of the rats» brains to see how naltrexone affected brain activity.

, Compartmental study of diffusion and relaxation measured in vivo in normal and ischaemic rat brain and trigeminal nerve.

Gozzi, A. * Schwarz, A., Reese, T., Bertani, S., Crestan, V., Bifone, A. Region - specific effects of nicotine on brain activity: A pharmacological MRI study in the drug - näve rat (2006) Neuropsychopharmacology, 31 (8), pp. 1690 - 1703

Second, the lab is studying how early life stress impacts both the transcriptome in stress - related brain regions using deep - sequencing methods and the addictive potential of the prescription opioid oxycodone using the drug self - administration paradigm, in male and female rats.