Age, sex, and gender influence the organization of the brain's opioid system. Findings shed light on why there are significant differences between the opioid system on an individual level, and why some are more prone to developing opioid-linked pathologies than others.
Study reveals how the brain's opioid system is linked to mood changes associated with depression and anxiety. Neuroimaging revealed, in those with depression, there is a decreased number of opioid receptors in specific areas of the brain.
Neuroimaging reveals areas of the brain associated with visual and auditory processing are more active when anxiety slowly increases during horror movies. After a shocking scene, brain areas associated with emotional processing, threat evaluation, and decision making increase in activity.
The seasonal duration of daylight influences the number of opioid receptors in the brain. The findings shed new light on a potential mechanism behind seasonal affective disorder.
Study finds a correlation with early infant gut microbiota composition and temperament traits in toddlers. Positive emotionality was associated with higher Streptococcus and Bifidobacterium levels, while negative and fear reactivity was associated with reduced bacterial diversity.
Young adults on the autism spectrum with co-morbid psychiatric disorders, including anxiety and affective disorders, have a higher risk of self-harm and suicidal behaviors.
A new study links prenatal smoking with a significantly increased risk of a child developing ADHD later in life. The study found higher cotinine levels in the mother's blood during pregnancy increased the risk of her child being diagnosed with ADHD three fold.
Chronic stress during pregnancy and elevated maternal cortisol levels have been linked to alterations in the gut microbiota of infants.
A neuroimaging study reports dopamine activity does not reflect the number of dopamine neurons in the substantia nigra of people with Parkinson's disease.
Vaccine skeptics have lower trust in doctors and are more likely to use alternative medicine. Researchers say vaccine recommendations given by authorities or as a result of social pressure cause defiance in those who are anti-vaccine.
A PET neuroimaging study reveals high intensity impact training significantly increases endorphin release in brain areas associated with controlling emotion and pain.