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The human voice appears to trigger pleasure circuits in the brains of typical kids, but not children with autism, a Stanford University team reports. The finding could explain why many children with autism seem indifferent to spoken words. The Stanford team used functional MRI to compare the brains of 20 children who had autism spectrum disorders and 19 typical kids. In typical kids there was a strong connection between areas that respond to the human voice and areas that release the feel-good chemical dopamine, but that connection was reduced in autistic children. Connections between voice areas and areas involved in emotion-related learning also were weaker, creating greater communication difficulties. The new study's suggestion that motivation is the problem could explain why speech often comes late to children with autism even though the brain circuit involved in processing spoken words seems to function normally; the reward circuitry isn't working the way it does in typical children.

Emotional contagion is the phenomenon of "catching" other people's emotions and moods. According to Elaine Hatfield, a psychology professor at the University of Hawaii, humans are hard-wired "to automatically mimic and synchronize facial expressions, vocalizations, postures, and movements with those of another person and, consequently, to converge emotionally." Primitive emotional contagion is a basic building block of human interaction. It helps us coordinate and synchronize with others, empathize with them, and read their minds-all critical survival skills. When we mimic, the body gets feedback about the expressions we've taken on; we then feel what the other person is feeling. Gary Slutkin, a physician, epidemiologist, and founder and CEO of the nonprofit Cure Violence, says that emotional contagion, specifically anger and violence, springs from four mechanisms involving the brain: 1. Engagement of the cortical pathways for copying, a behavior related to mimicry. The most contagious behaviors are the most emotionally engaging, as well as the ones carried out by the people who are most relevant to you. 2. Activation of the brain's dopamine system, which works in anticipation of a reward. "Activation of that system puts you down a pathway toward what is important socially and for survival," he says. If you anticipate being rewarded for responding to someone with anger or violence, you are more likely to get on that behavioral track. 3. The brain's pain centers activate from veering off or being shut out from getting a reward. "A sense of I can't stand it lights up in the context of disapproval." 4. Serious injuries or abuse cause the limbic system and amygdala in the lower brain to become hyperreactive. "This causes you to be less in control, which accelerates violent behavior," Slutkin says. It also makes you more likely to get angry and be quick to react. "Then there's hostile attribution, another part of what happens with the limbic sy

In this article, researches hypothesize how the expansion of dopaminergic systems may have contributed to the development of many of our unique cognitive abilities including language.

Developmentally, teens are at particular risk for reckless online behavior, including secrecy regarding social networking. Many people - adults and kids alike - view likes, loves, comments and followers as a barometer for popularity, even within a smaller, closed group. Teens can quickly get caught up in the feedback loop, posting and sharing images and videos that they believe will gain the largest reaction. Over time, teens' own values may become convoluted within an online world of instantaneous feedback, and their behavior online can become based on their "all about the likes" values rather than their real-life values. There is a very real biological basis for this behavior. The combination of social media pressure and an underdeveloped prefrontal cortex, the region of the brain that helps us rationalize decisions, control impulsivity and make judgments, can contribute to offensive online posts. In a recent study, researchers at the University of California, Los Angeles, found that the areas of teens' brains focused on reward processing and social cognition are similarly activated when they think about money and sex - and when they view a photo receiving lots of likes on social media. When teens viewed photos deemed risky, researchers found the brain regions focused on cognitive control were not activated as much, suggesting that it could be harder for them to make good decisions when viewing images or videos that are graphic in nature.

There is growing concern that as well as addicting users, technology is contributing toward so-called "continuous partial attention", severely limiting people's ability to focus, and possibly lowering IQ. One recent study showed that the mere presence of smartphones damages cognitive capacity - even when the device is turned off. "Everyone is distracted," Rosenstein says. "All of the time."

Though smartphones seem ubiquitous in daily life, they are actually so new that researchers are just beginning to understand what the devices may do to the brain. Researchers say phones and social media not only serve a primitive need for connection but can also create powerful feedback loops. "People are carrying around a portable dopamine pump, and kids have basically been carrying it around for the last 10 years," said David Greenfield, assistant clinical professor of psychiatry at the University of Connecticut School of Medicine and founder of The Center for Internet and Technology Addiction.

This text dives into the psychological aspects of linguistics and how kind words can positively impact ones neurological senses and brighten someone's day. Not only does it send dopamine hits, but the addition of personalizing a note to someone, whether thanking them or letting them know they matter, is crucial to relationships and having meaninful conversations.

Article about social media effects on mental health. Talks about fear of missing out and reward dopamine centers and brain.