A University of Iowa study shows that loss or chemical inhibition of a protein, known as acid sensing ion channel protein (ASIC1a), reduces innate fear behavior in lab animals, making normally timid mice relatively fearless. The findings might provide useful insight into anxiety disorders and may even point the way to a new therapeutic target.
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Disturbed sleep is a commonly reported symptom among individuals diagnosed with anxiety disorders. However, the direct cause of disrupted sleep is poorly understood.
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People who suffer from anxiety tend to interpret ambiguous situations, situations that could potentially be dangerous but not necessarily so, as threatening. Researchers from the Mouse Biology Unit of the European Molecular Biology Laboratory (EMBL) in Italy have now uncovered the neural basis for such anxiety behaviour in mice.
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A new study by researchers led by Kurt Kroenke, M.D., of the Indiana University School of Medicine and the Regenstrief Institute, Inc. reports that nearly 20 percent of patients seen by primary care physicians have at least one anxiety disorder.
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Approximately 9 million to 15 million people in the U.S. suffer from recurrent bouts of dizziness and 3 million experience symptoms of dizziness nearly every day.
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Chronic dizziness may have several common causes, including anxiety disorders, migraine, traumatic brain injury and disorders in the part of the nervous system governing involuntary activities, according to a report in the February issue of Archives of Otolaryngology-Head & Neck Surgery, one of the JAMA/Archives journals.
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A new study on rats has identified a part of the brain's cortex that controls learned but not innate fear responses.
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