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The Brain

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by

Tess Despres

on 2 December 2014

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Transcript of The Brain

What Are Neurons?
The brain consists of about 100 billion neurons
Brain Injuries
Brain damage refers to the destruction or degeneration of brain cells
Optical Illusions
Evolution of the Brain
Contents
The Brain
(n.) an organ of soft nervous tissue contained in the skull of vertebrates, functioning as the coordinating center of sensation and intellectual and nervous activity.
The Brain
Introduction
Hemispheres
Sections of the Brain
Evolution
Fetal Development
Neurons
Brain Injuries
Optical Illusions
Random Facts
Left Hemisphere
Logical
Detail-oriented
Practical
Safe
Right Hemisphere
Feelings
Risk-taker
Imagination
Spontaneous
Philosophical
Learns with images
Sections of the Brain
The Frontal Lobe
The Parietal Lobe
Temporal Lobe
Occipital Lobe
Most recently developed section is the neocortex
The neocortex is responsible for thought processes and the development of language
Fetal Development
The brain of
Homo sapiens
is three times the size of the brain of a chimpanzee
Week 6-7: the brain divides into five sections
Week 5: the brain begin to develop
Week 11-14: the head and brain are half the size of the baby
Week 27-30: the brain rapidly develops
This is the largest of the brain structures
Responsible for functions such as
-attention
-decision making
-planning
-thinking
-short term memory
-motivation
Interprets surroundings
In charge of sensory functions
Responsible for coordination and perception
This part of the brain controls vision
Responsible for recognition and processing sensory input
Helps understand language and emotion as well as store new memories
Possible disorders include schizophrenia, ADHD, and bipolarity
Disorders include amnesia, dementia and delirium
Possible disorders include schizophrenia and cognitive disorders such as amnesia
Cerebellum
This section of the brain is in charge of motor skills
Contains more neurons than the rest of the brain combined
One of few brain structures that goes through neurogenesis during adulthood
Responsible for
-coordination
-movement
-balance
-motor skills
-reflex memory
-posture
The Brain Stem
Helps maintain homeostasis
Controls breathing, heart rate and blood pressure
Contributes to movement
such as facial expressions
Potential disorders include amnesia, dementia and delirium
Responsible for alertness, sleep, and startle responses
Neurons are cells that process information
The four kinds are motor, sensory, communication, and computation
Sensory tell the brain about external and internal environment
Motor contract muscles and mediate behavior
Communication transmits signals from one area of the brain to another
Computation extract and process sensory information, as well as plan behavior
Specific Neurons
Comprehensive
Factual
Realistic
Corpus Callosum
This process allows us to move, think access memories and control our behavior.
Processes information from the eyes almost instantaneously
If any damage occurred, you would not be able to see properly
Differentiates between shapes and colors
Neurons have been studied using samples from the giant squid that are visible to the naked eye
Information is transferred through electrically charged proteins
Proteins travel down the axon and into the next neuron in the chain
How Neurons Work
Between 1.6 and 3.8 million traumatic brain injuries each year are a result of sports and recreation activities
Traumatic brain injury is damage that occurs when an outside force injures the brain
A stroke is a vascular event causing damage in the brain
Acquired brain injury is damage to the brain that occurs after birth
An illusion is something that deceives by producing a false impression of reality
Optical illusions occur when the information gathered by the eye is processed by the brain an a way that creates characteristics that do not in fact exist.
Random Facts About the Brain
The brain weighs 3 pounds
There is no pain receptors in the brain
The brain is wrinkled to produce more surface area for neuron connections
The brain is 75% water
Layers of the Brain
Reptilian
-oldest section
-vital functions
-heart rate
-breathing
Limbic
-middle layer
-first mammals
-memories
- emotions
Neocortex
-newest section
-found in primates
-outer layer
-consciousness
250,000 neurons are produced per minute during pregnancy
http://www.btbuddies.org.uk/about-high-grade-brain-tumours/areas-of-the-brain-and-their-functions.html
http://thebrain.mcgill.ca/flash/d/d_05/d_05_cr/d_05_cr_her/d_05_cr_her.html
http://www.babycenter.com/0_fetal-development-timeline_10357636.bc
By Tess D & Jason R
Bibliography
http://en.wikipedia.org/wiki/Frontal_lobe
http://thebrain.mcgill.ca/
https://faculty.washington.edu/chudler/cells.html
http://thebrain.mcgill.ca/flash/d/d_01/d_01_cl/d_01_cl_ana/d_01_cl_ana.html
https://www.brainbashers.com/opticalillusions.asp
http://www.nobeliefs.com/puzzles/illusions.htm
Full transcript