The secret life of the brain pbs video online,hair secrets extensions makeupalley,watch raven the secret temple online free 5.0 - Review

02.07.2014
Copyright 2001This PBS series reveals the processes involved in brain development across a lifetime.
Episode 1 introduces the brain at its earliest points in development, and answers the question of how do the trillions of connections in the brain begin?
The program also looks at infant vision, one of the ways by which a child is introduced to the world. The program also looks at the effects that epilepsy and Rasmussen's syndrome can have on brain development in some children. Rasmussen's syndrome is a unilateral, progressive, inflammatory disease characterized by normal early development and relatively late onset seizures. A hemispherectomy is a radical surgical procedure that involves the removal of one cerebral hemisphere. There are a number of different centers in the country that perform hemispherectomies, so it's hard to estimate the total number performed each year. The series features new information in the brain sciences, introduces the foremost researchers in the field, and utilizes dynamic visual imagery and human stories to help viewers understand otherwise difficult scientific concepts.
A baby's brain is a mystery that begins in the womb -- only four weeks into gestation the first brain cells, the neurons, are already forming at an astonishing rate: 250,000 every minute. As the brain begins teeming with hormones, the prefrontal cortex, the center of reasoning and impulse control, is still a work in progress.
We are well aware of how brain malfunctions can cause pain, depression and emotional paralysis.


Overturning decades of dogma, scientists recently discovered that even into a person's seventies, the human brain continues producing new neurons. Recently, scientists have made groundbreaking discoveries regarding the disease's causes and preventions. In contrast to other childhood seizure disorders, these children develop normally until at least 5 years of age and even until 13-15 years of age before they start having seizures. There has been speculation that Rasmussen's Syndrome is viral in origin, but that hypothesis has been challenged. To date, hemispherectomy is the most effective treatment for Rasmussen's syndrome (the seizures are progressive in nature and do not respond over time to medication). Partial and functional hemispherectomies do not involve removal of the entire cerebral hemisphere, but typically leave one or more cortical lobes in place. Billions of neurons will forge links with billions of other neurons and eventually there will be trillions and trillions of connections between cells. Infant cataracts pose an interesting challenge to scientists: how to remove the visual obstruction without compromising brain development.
In nearly all adults, the language center of the brain resides in the left hemisphere, but in children the brain is less specialized. For the first time, scientists can offer an explanation for what parents already know -- adolescence is a time of roiling emotions and poor judgment. The study of emotion was once relegated to the backwaters of neuroscience, a testament to the popular conception that what we feel exists outside our brains, acting only to intrude on normal thought.


We must also understand that the brain affects positive emotional responses such as laughter, excitement, happiness and love. Scientists no longer hold the longstanding belief that people lose a vast numbers of brain cells as they grow older. Another difference with other childhood seizure disorders is that Rasmussen's syndrome is unilateral: it affects only one hemisphere. Scientists have demonstrated that until babies become about a year old, they respond to language with their entire brains, but then, gradually, language shifts to the left hemisphere, driven by the acquisition of language itself. The normal aging process leaves most mental functions intact, and may even provide the brain with unique advantages that form the basis for wisdom.
In mapping our emotions, scientists have found that our emotional brain overlays our thinking brain: the two exist forever intertwined. We carry thousands of titles covering a diverse range of topics for all ages and grade levels. Scientists have just begun to answer questions about the purpose of sleep as it relates to the sleep patterns of teenagers. The program also looks at how drug addiction manifests itself in the brain, as well as schizophrenia -- a major challenge to the adolescent brain.



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