Whatever research labs are producing, are related to Vaikhari-vak which is the grossest level of speech, and it is heard through the external senses. When sound comes out through the mouth as spoken syllables it is called as vaikhari.

Our culture and education suggests and promote deeper commune! Para, pashyanti, madhyama ! (Read article in comment for understanding)

Can you imagine what growing national assets (our kids!) miss due to idiotic parenting? (Mother and father busy in own life, having very little time to talk with kids)

Can you imagine the havoc when human interactions are replaced by machine interactions? (Tablet based education! 😀 )

This is how psychopaths (zombies , terrorists , stalkers) are groomed by society. By utter neglect from mother (and all motherly figures participating in parenting) in childhood.

Research

http://med.stanford.edu/news/all-news/2016/05/moms-voice-activates-different-regions-in-children-brains.html

Mom’s voice activates many different regions in children’s brains

“This is an important new template for investigating social communication deficits in children with disorders such as autism,” Menon said. His team plans to conduct similar studies in children with autism, and is also in the process of investigating how adolescents respond to their mother’s voice to see whether the brain responses change as people mature into adulthood.
“Voice is one of the most important social communication cues,” Menon said. “It’s exciting to see that the echo of one’s mother’s voice lives on in so many brain systems.”

“Many of our social, language and emotional processes are learned by listening to our mom’s voice,” said lead author Daniel Abrams, PhD, instructor in psychiatry and behavioral sciences. “But surprisingly little is known about how the brain organizes itself around this very important sound source. We didn’t realize that a mother’s voice would have such quick access to so many different brain systems.”

Preference for mom’s voice

Decades of research have shown that children prefer their mother’s voices: In one classic study, 1-day-old babies sucked harder on a pacifier when they heard the sound of their mom’s voice, as opposed to the voices of other women. However, the mechanism behind this preference had never been defined.