Эксперт по сдаче вступительных испытаний в ВУЗах
1. How is brain development designed to form connections? Most important is what is happening inside brains. Brain development is all about forming connections. We are born with more brain cells than we need. In two critical periods of development we lose a lot of neurons: those that are connected and functioning stay and elaborate; those that are unused retract and die. “Use it, or lose it”. In this way there is an important relationship between environments – what our brains are exposed to and what we do with them – and brain development.
2. How do brain connections relate to brain function? Brain cells sprout branches that connect one cell to many others. Covering the axons – major branch that connects neurons with myelin, a fatty substance formed from a specific type of brain cell that allows for rapid movement of brain electrical signals. Dying off brain cells and connections that do not get used.
3. What is adolescent brain like? Adolescence is a time of rapid brain change. Brain becomes very sensitive to rewards. They drive toward novelty and to social experience. Networks involved in emotion regulation and impulse control are not well developed until much later. Other changes in the brain during adolescence include a rapid increase in the connections between the brain cells and making the brain pathways more effective.
4. What can go wrong in brain development? Environmental and pre –natal exposures can affect network development: eg. alcohol exposure.
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