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Tag: "anxiety" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...children, including a mothers level of post natal anxiety or depression, her smoking habit, or her social class. This problematic sleep is notable; it may be part of the reason why mood-disturbed pregnancies are linked to childrens behavioral disorders, like depression, hyperactivity and anxiety, later ...

Traumas like Sept. 11 make brains more reactive to fear

...es people more likely to develop PTSD, depression, anxiety and physical illness later in life, according to other studies. Also, trauma has been found to make the brain's emotional processing centers -- particularly the amygdalae, the parts of the brain that judge emotional intensity and make emotional memor...

Brain's reward circuit activity ebbs and flows with a woman's hormonal cycle

...d mood disorders, women's higher rates of mood and anxiety disorders, and their later onset and less severe course in schizophrenia," said Karen Berman, M.D., chief of the NIMH Section on Integrative Neuroimaging. "The study may also shed light on why women are more vulnerable to addictive drugs during the p...

New compound prevents alcoholic behavior, relapse in animals by blocking stress response

... synthetic compound, known as MTIP, also muted the anxiety that typically develops in rats experiencing the e...ove to be useful in the treatment of depression or anxiety disorders, in which CRF levels can be especially high. The compound or similar molecules can be ...

Scientists find hormone activity explains adolescent mood swings

...f life. Until now, the specific causes of pubertal anxiety have not been identified, making it harder to unde... state of increased anxiety. Stress also increased anxiety at puberty, due to the paradoxical effects of this hormone that is released by stress. Dr. Smith...

Anxiety disorders surprisingly common yet often untreated

... seen by primary care physicians have at least one anxiety disorder. The study outlines the effectiveness of ...care physicians to those patients with one or more anxiety disorders. The study is published in the March 6 issue of the Annals of Internal Medicine. The GAD...

Does a peptide affect the heart's response to social isolation?

...may increase the risk of developing depression and anxiety as well as heart disease. Prairie voles (ochrogaster) are small rodents that demonstrate features of social interactions similar to humans and therefore provide a useful animal model for investigating how the social environment influences behavio...

Low levels of neurotransmitter serotonin may perpetuate child abuse across generations

...brain. Low levels of serotonin are associated with anxiety and depression and impulsive aggression in both humans and monkeys. Abused females who became abusive mothers in adulthood had lower serotonin in their brains than abused females who did not become abusive parents, the research showed. Because ...

Anticipation plays a powerful role in human memory, brain study finds

...er memory of discomfort, the worse her performance anxiety is likely to get. The UW-Madison scientists found that two key regions of the brain - the amygdala and the hippocampus - become activated when a person is anticipating a difficult situation. Scientists think the amygdala is associated with the form...

Emotional control circuit of brain's fear response discovered

...sible to understand psychiatric disorders, such as anxiety or depression, from the underlying neurophysiology...ed in the research. "For example, if someone with anxiety has a disturbed functioning of part of the amygdala or a disturbed functioning of rACC control mecha...

When nerve cells can't make contact

...-4 mutant mice obviously have disturbed social and anxiety behaviour. "If we succeed in measuring robust, autism-relevant behavioural changes in our mutant mice, then at least the step to experimental diagnosis and therapy in the animal model will be possible." From the point of view of the geneticist, the...

Just like us, social stress prompts hamsters to overeat, gain weight

...tivation in brain regions responsible for fear and anxiety in laboratory rats and reduction in immune function compared with events that are predictable." Next steps Syrian hamsters provide a good model for obesity research, not only because they eat more and gain weight, but because, like humans, they a...

Hopkins scientists show hallucinogen in mushrooms creates universal 'mystical' experience

...o study participants, though some admitted extreme anxiety or other unpleasant effects in the hours following the psilocybin capsule. The drug has not been observed to be addictive or physically toxic in animal studies or human populations. "In this regard," says Griffiths, a psychopharmacologist, "it contra...

Autistic brain has fewer neurons for processing emotion

...neuron loss, or the heightened level of stress and anxiety commonly observed in patients with autism could, over time, lead to a loss of neurons. More studies are needed to pinpoint exactly why autistic brains have fewer neurons in the amygdala, she adds. "We're in the very early stages of understanding a...

Virtual realities against pain

...arable levels of pain. It was found that levels of anxiety were reduced during the exposure, and the side eff...ll as a loss of control, leading to an increase in anxiety and pain; other patients see it as positive that they cannot see and perceive what the medical pract...

Studies suggest new brain protein may help in treating schizophrenia, insomnia and anxiety

...rousal, suppresses all phases of sleep and lessens anxiety in stressful or unfamiliar situations. Now, at I...t could potentially be a target for drugs to treat anxiety and, interestingly, both insomnia and narcolepsy," he added. The receptor for NPS belongs to a clas...

Study reveals how ADHD drugs work in brain

...bit symptoms in their adult years. Despite public anxiety over the treatment of a behavioral condition with pharmacological drugs, doctors have continued to prescribe meds like Adderall, Ritalin and Dexedrine because - quite simply - they work better than anything else. ADHD drugs fall into a class of med...

Obese people are more sensitive to pain, suggests study

... felt. Participants completed questionnaires about anxiety and pain perception after each round of electrical stimulations. All participants, obese or not, reported that they felt less pain after the relaxation session than they did before. Yet results of the sural nerve stimulus test showed that the obese ...

Nobelist discovers antidepressant protein in mouse brain

...ed in psychiatric illnesses such as depression and anxiety disorders. They report on their findings in the Ja...itors (SSRIs), medications commonly prescribed for anxiety and depression, compensate for reduction in serotonin signaling by boosting levels and binding of se...

Confidence in memory performance helps older adults remember

... a warning sign of Alzheimer's disease, leading to anxiety and despair. Those who don't use adaptive strategies for remembering often have the expectation that there is nothing they can do to improve memory. The study's results suggest that interventions that target conceptions of control over memory could ...

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