Researchers identified 48 common genetic variants that appear to play a role in the size of the brainstem and other subcortical structures. Forty of the variants were novel. The findings also revealed 199 genes related to the variants which regulate brain development and susceptibility to neurological disorders.
MRI neuroimaging can distinguish between memory loss caused by Alzheimer's disease and traumatic brain injury. Using new image analysis software, researchers discovered TBI causes the most amount of damage to the ventral diencephalon, a brain area associated with memory and learning, and the least amount of atrophy to the hippocampus, a brain region most impacted by Alzheimer's.
Researchers report preteens who like to experiment and engage in new experiences have stronger neural connections and brain processes than those who don't.
According to researchers, children who carry the APOE4 gene and who are exposed to air pollution have higher behavior problem scores and their attention capacity was slower to develop.
Neuroimaging reveals lower activation in the dorsolateral prefrontal cortex and angular gyrus in teenage girls with conduct disorder. Findings suggest that a reduction in prefrontal brain regions and functional connectivity during effortful emotional regulations contribute to behaviors associated with antisocial behavior in teenage girls.
Study reports the putamen, not just the cortex, contributes to the brain's ability to multitask.
A new study reports children and teens who face chronic bullying have altered brain structure, as well as problems with anxiety and depression. Researchers found those who were bullies had structural changes to the putamen and caudate, contributing to the development of anxiety related behaviors and emotional processing.
Iron levels in the basal ganglia steadily increase throughout development and, in two sub-regions, continue to increase into adulthood. Decreased levels of iron in the putamen was correlated with impaired cognitive performance involving reasoning and spatial processing. Findings suggest the brain requires iron for healthy cognitive development.
Treatment resistant bipolar disorder patients experienced a reversal of a key symptom 40 minutes after a single infusion of ketamine, a new study reports.
Researchers report modern humans who carry particular Neanderthal DNA fragments have slightly less rounded heads. The findings shed light on the evolution of modern brain shape and function.
Stress can have an impact on voice disorders. Researchers found those with higher salivary cortisol levels also exhibited brain activity that impacted the larynx. Those who were more introverted were more likely to have stress reactions related to speech.