Suicide survivors have higher pain tolerance and are less sensitive to bodily signals associated with their breathing and heart. Researchers found those who attempted suicide were able to tolerate the breath-hold and cold-pressor interoceptive challenges significantly longer than those who had no history of suicidal behavior. The interoceptive numbing was linked to lower brain activity in the insular cortex.
Mouse show different facial expression depending on their emotional state. Using machine learning, researchers were able to link five different emotional states to the facial expressions of mice.
A drug commonly prescribed for edema improves the symptoms for young children on the autism spectrum with no significant side effects. The drug, bumetanide, decreases the ratio of GABA to glutamate in the brain.
Scenes of justified and unjustified violence in movies activate different areas of the adolescent brain. Unjustified violence activates the lateral orbital frontal cortex, while scenes where violence appears justified, activates the ventromedial prefrontal cortex.
Using optogenetics to 'switch off' the insular cortex in mice experiencing a painful event resulted in a less fearful reaction to pain. The ability of the mice to learn avoidance from the pain event was also reduced.
Functional olfactory receptors have been identified in human taste cells. The findings suggest olfactory receptors play a role in the taste system by interacting with taste receptors on the tongue. The brain, researchers say, combines input from taste, smell and other senses to create a multi-modal sensation of flavor.
Researchers say those who use both cannabis and nicotine have greater brain connectivity that those who take one or the other. The networks of those who used both substances closely resembled those who people who took neither drug.