Presentation (Narrative) - Brain Development and Plastisity

In: Philosophy and Psychology

Submitted By Natav
Words 2071
Pages 9
Slide 1
Hi everyone! My presentation will be about brain development and plasticity.
Slide 2
“The human brain is estimated to have about a hundred billion nerve cells, two million miles of axons, and a million billion synapses, making it the most complex structure, natural or artificial, on earth.” Tim Green, Stephen F. Heinemann and Jim F. Gusella (from a paper in Neuron, 1998)
Slide 3
Brain development.
Slide 4
What we know about human brain? The human brain is the most complex of all biological systems. It is made of a hundred billion information processing cells called neurons. The neurons communicated with each other by making connections. This connections called synapses. It is estimated there are 60 trillion connections in the adult brain. It has about 200 000 neurons.

Slide 5
Brain has right and a left hemispheres. They connected by a fiber bundle that leads to the two sides of the brain that connect to each other. Average human brain weighs about 2-3 pounds.
If we will look inside of adult brain we will see two kinds of tissue: grey matter and white matter. It contains of the cell bodies of the neurons. We can see grey matter along the entire surface of brain. Thats the neocortex. Cortex the brain's outer layer, which is essentially our gray matter.
The white matter consist other fiber that connect neurons into information processing networks. Each neuron extends a connecting fiber called axon. Axons covered with a fatty substance called mylan that gives the axons white color. It is like an insulation on the electrical wire making the connections signals between neurons fast and efficient. At the end of axons on connection sides called synapses. They allow the cells to communicate with one another.

Slide 6
2000 years ago Seneca proposed that a human embryo is an adult in miniature and the task of development is just to grow bigger.…...

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