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10 Facts You Should Know About Every Baby's Brain

Most of them are bald, fat and speak in code only they understand. And we couldn't be more fascinated. What is going on inside the infant noggin? Here are 10 facts about the baby's brain every parent should know.

1. Keep It Natural

A baby's brain is a complex organ and in many ways more complex than the adult brain to scientists because they simply don't understand it. By the time a baby is born, the brain has already undergone immense development, though it is still in a developmental phase, since all of the neurons in these regions are weakly connected. It is a critical time to protect the brain of a baby. Anything harmful the infant is exposed to such environmental toxins, pollution, chemicals in foods, water or drugs can dramatically affect infant development. Keep it natural. A baby's brain thrives on breast milk at an early age. Exclusively breastfed babies have enhanced brain development in language, emotional function and cognition. It is also criticial to avoid any exposure to medications of any kind in an infant's first year of life.

2. Parental responses wire baby's brain

"As long as there have been babies, there have been parents," said Michael Goldstein, a language development researcher at Cornell University. The baby's brain has evolved to use the responses of caregivers to help it develop, Goldstein stated. The newborn prefrontal cortex - the brain's so-called "executive" area - doesn't have much control, so efforts to discipline or worries about spoiling are pointless at this stage. Instead, newborns are learning about hunger, loneliness, discomfort and fatigue - and what it feels like to have these pains relieved. Caregivers can help this process along by promptly responding to baby's needs, experts suggest.

3. Silly faces and sounds are important

When babies imitate the facial expressions of their caregivers, it triggers the emotion in them as well, explains Alison Gopnik in her book "The Philosophical Baby" (Farrar, Straus and Giroux, 2009). This helps infants build on their basic innate understanding of emotional communication and may explain why parents tend to make exaggerated happy and sad faces at their little ones, making them easier to imitate. Parentese, or baby talk, is another seemingly instinctual response that researchers have found is critical to infant development. Its musicality and exaggerated, slow structure emphasizes critical components of a language, helping a baby grasp words, Eliot stated.

4. Baby's brain grows rapidly

When first born, the brains of humans, apes and Neanderthals are much more similar than they will be by adulthood.

After birth, the human brain grows rapidly, more than doubling to reach 60 percent of its adult size by the time the tot is sampling his first birthday cake. By kindergarten, the brain has reached its full size but it may not finish developing until the kid is in his mid-20s, Eliot stated. Even then, Eliot qualified, "the brain never stops changing, for better or worse."

5. Lantern (vs. flashlight) awareness

Baby brains have many, many more neuronal connections than the brains of adults. They also have less inhibitory neurotransmitters. As a result, researchers such as Gopnik have suggested, the baby's perception of reality is more diffuse (read: less focused) than adults. They are vaguely aware of pretty much everything - a sensible strategy considering they don't yet know what's important. Gopnik likens baby perception to a lantern, scattering light across the room, where adult perception is more like a flashlight, consciously focused on specific things but ignoring background details.

As babies mature, their brains go through a "pruning" process, where their neuronal networks are strategically shaped and fine-tuned by their experience. This helps them make order out of their worlds, but also makes it harder to innovate and come up with such breakthroughs as spinach puree face paint.

Creative people, Gopnik and others have argued, have retained some ability to think like an infant.

6. Babbling signals learning

Within their lantern's light, babies do focus however momentarily. And when they do, Goldstein stated, they usually make a sound to convey interest. In particular, babbling - the nonsense syllables babies spout - is "the acoustic version of a furrowed brow," Goldstein said, signaling to adults that they are ready to learn. Ambitious parents may want to keep an ear out for this signal, Eliot said. "The only thing we know of, that makes babies smarter, is talking to them," she stated, emphasizing that dialogue is best, where a parent responds within the pauses of an infants' vocalizations.

Incidentally, the word "baby" may come from this babbling, as in "the one that says ba-ba-ba."

7. There is such thing as being too responsive

Some parents take Eliot's advice too far and strive to meet Junior's every yip with a yap. But when babies get a reaction 100 percent of the time, they get bored and look away. Worse, "their learning is very delicate," Goldstein said: It won't last the first inevitable time they don't get the reaction they expect.

When acting instinctually, parents respond to 50 to 60 percent of a baby's vocalizations. In the lab, Goldstein has found that language development can be sped up when babies are responded to 80 percent of the time. Beyond that, however, learning declines.

Parents also naturally "raise the babble bar," Goldstein stated, by slowly responding less to sounds they have heard a baby make many times (like "eh"), but excitedly repeating a new sound that comes closer to a word (such as "da".) In this way, the baby starts to piece to together the sound statistics of his language.

8. Educational DVDs, tapes, etc. may be worthless

While from birth babies may cry with the intonations of their mother tongue, recent research emphasizes that social responses are fundamental to a child's ability to fully learn language.

"Babies divide up the world between things that respond to them and things that don't," Goldstein said. And things that don't, don't teach. A recording does not follow a baby's cues, which is why infant DVDs, such as Baby Einstein and Brainy Baby, have been found to be ineffective, he explained.

If you want to help your baby to be smart, throw out the flashcards and videos, Eliot said, and play with your baby.

9. Their brains can become overwhelmed.

But their need for human interaction doesn't mean they should be tickled senseless day and night.

Babies have short attention spans and can easily be over-stimulated, Eliot said. So sometimes, the interaction they need is simply help calming down. This can be provided by rocking, dimming lights or swaddling flailing limbs that babies have yet to figure out how to control, Eliot said. Being able to not only calm down but also sleep, especially during the night, may enhance skill development, at least for babies 12 months and older, suggests a 2010 study in the journal Child Development.

10. They need more than Mom and Dad

While scientists usually focus on infant-parent relationships, broad studies have shown that it really does take a village. According to research presented in the journal Monographs of the Society for Research in Child Development in 1995, children seem to do best when they have at least three adults who consistently send the message: Hey kid, I got you.

Researchers such as Sarah Hrdy, author of Mothers and Others (Belknap, 2009), theorize that spending time with non-parental caregivers - a grandparent, a daycare teacher, a family friend, a doting aunt - helps infants learn to read different facial expressions and expand their ability to take the perspectives of others.

Babies use adult mental processes for deciphering others' emotions by the time they are seven months old, research suggests.

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