First responders at the World Trade Center who experience cognitive impairment and PTSD have a different presentation of white matter in the brain compared to first responders with cognitive impairment without PTSD. Researchers say the findings point to a new and specific form of dementia for those responders with PTSD.
The activation of a neural circuit comprising of the central nucleus of the amygdala and the bed nucleus of the stria terminalis in the first hours following sepsis infection induced anxiety behaviors in mice two weeks after the infection cleared. The behaviors mimicked the PTSD symptoms patients experience following sepsis infection.
The brains of newborns already contain five critical networks, including high-level visual and somatosensory networks that are similar to those seen in adult brains. Researchers identified multiple genes from brain tissue samples that may have led to the specific brain organization in newborns.
New findings reinforce the idea that dementia with Lewy bodies can be pathologically classified as two different and distinct disease types.
The habenula relays external information, such as sight and smell, along with internal states associated with emotion and learning to brain regions that govern adaptive behaviors.
Researchers have identified a specific node in the brain of mice that regulates vocalizations in response to social situations. If a similar location could be found in the human brain, researchers say it could potentially lead to new insight into social dysfunctions associated with autism and depression.
Researchers have identified a novel neurotransmitter system in the brain. The system signals transmission of innate olfactory information to areas of the brain associated with emotional processing via the TAAR5 receptor. The findings could help in the development of new treatments for depression and schizophrenia.
A shot of the reproductive hormone kisspeptin enhances brain activity in response to olfactory and visual cues of attraction in men. The findings reveal a previously undescribed attraction pathway in humans activated by the hormone and identify kisspeptin signaling as a potential therapeutic pathway for psychosexual and reproductive disorders.
While the risks of developing depression, anxiety disorders, and psychosis are significantly higher for urban dwellers, researchers report there are some positive impacts on mental health for those who live in big cities.