According to a Stanford Medicine study, kids brains shift from focused on their mothers'' voices to favoring new voices. This is a factor in driving adolescents to become separate from their parents.
When your adolescents fail to listen to you, it''s not that they do not want to clean their room or complete their homework. Their own words aren''t registering your voice the way they did in pre-teenages.
According to a new study from the Stanford School of Medicine, kids brains no longer consider their moms voices as uniquely rewarding.
The study, which was published on April 28 in the Journal of Neuroscience, used functional MRI brain scans to provide the first comprehensive neurobiological explanation for how teens begin to separate from their parents.
An adolescent learns to tune into her mother''s voice, according to the author of a research at Stanford University. As a kid, you dont know youre doing this. You''ve got your friends and new companions, and you want to spend time with them. Your mind is becoming more sensitive to these unfamiliar voices.
According to research, the teens'' brains are more receptive to all voices, including their mothers, than the brains of children under 12, resulting in a conclusion that connects with teens increases interest in a variety of social signals.
However, in teenage brains, rewards circuits and the brain centers that prioritize important stimuli are more activated by unfamiliar voices than by their mothers. The brains shift towards new voices is a component of healthy maturation, according to researchers.
According to the study, a child becomes independent at some point, and that must be determined by an underlying biological signal. This is what weve learned: This is a signal that helps adolescents engage with the world and form connections that enable them to be socially adept outside their families.
Age-related shift toward new voices
The Stanford team previously found that, in the brains of children 12 and under, hearing Moms voice created an explosion of unusual responses: A study in 2016 found that children can identify their mothers voices with extremely high accuracy and that the special sound of Mom cues not only the brains auditory-processing areas, but also many other areas that are not triggered by unfamiliar voices, such as reward centers, emotion-processing areas, visual processing centers and brain networks that evaluate the incoming information.
The mother''s voice is a powerful tool that teaches young children about the social-emotional world and language development, according to Percy Mistry, a PhD, co-lead author and a research scholar in psychology and behavioral sciences. Even though they have spent more time with this sound source, parents are tuning away from it in favor of voices they have never heard.
The new study has been built on the previous findings, which included data from teenagers between 13 and 16.5 years of age. All participants had an IQ of at least 80 and were being raised by their biological mothers. They did not have any neurological, psychiatric, or learning difficulties.
The teens mothers were recorded saying three nonsense words in a matter of seconds. Using nonsense words, they ensured that the participants would not respond to the words meaning or emotional content. Two women were also recorded saying the same nonsense words, in random order, and were identified when they heard their mother.
The teens were then placed on a magnetic resonance imaging scanner, where they listened once more to voice recordings. They also listened to brief recordings of household sounds, such as a dishwasher running, to allow the researchers to see how the brain responds to voices rather than other non-social sounds.
More activation overall
All voices among teenagers elicited increased activation in several brain regions, compared to younger children: the voice-selective superior temporal sulcus, an auditory processing area; salience processing areas that reveal which information is important; and the posterior cingulate cortex, which is involved in autobiographical and social memory. In addition to this, researchers examined the brain''s responses to voices, which was initially so robust that they could analyse them and establish their appearance.
Unusual voices enlivend greater activity than Moms voice in the nucleus accumbens of the reward-processing system, particularly in the ventromedial prefrontal cortex, a region involved in social information. In these brain centers, between 13 and 14 years of age, no distinction semblanced between boys and girls.
The findings will aid in understanding what happens in the brains of adolescents with autism and other disabilities that affect how they tune into voices and other social stimuli. The Stanford team has found that younger children with autism do not have as strong a brain response to their mothers voices as normal.
Voices are really what connect us.
The researchers said the study is encouraging to have established the foundations of young people''s ability to tune in to new people. This is because the brain is so adept at voices, making sense just ask anyone who has experienced an emotional jolt about hearing a friend or family member''s voice after a long time.
As Abrams said, the voices in our environment are a powerful, powerful sound source that allows us to be connected, included, part of a community, and part of a family. Voices are very important to us.
During adolescence, children''s social interactions undergo a significant transformation. We found that this process is rooted in neurobiological changes, according to Menon. It is because youngsters are wired to pay more attention to their voices outside their house.