2. Bigger brains are smarter brains You only use about 10% of your brain Brain Myths Sleep aids memory formation You can grow new brain cells Hit or shit? Bad diets can cause brain damage Thinking bad things can make you sick You can be brain dead but remain alive The brain is the most complex structure in the known universe There is a you part of the brain – a bit that controls the rest The brain is partly made of fat No two nerve cells in your brain actually touch Your brain uses electricity to think Depression is a physiological disease
3. Bigger brains are smarter brains (only between species, sorry big heads don’t mean your smart!) You only use about 10% of your brain Sleep aids memory formation You can grow new brain cells Bad diets can cause brain damage Thinking bad things can make you sick You can be brain dead but remain alive The brain is the most complex structure in the known universe There is a you part of the brain – a bit that controls the rest The brain is partly made of fat No two nerve cells in your brain actually touch Your brain uses electricity to think Depression is a physiological disease
4. Get a feel for the brain…. Adult brain weighs about 1.5kg It has the consistency of cooked oatmeal If spread out flat it would cover about 6 pages of the age newspaper You are born with all of the nerve cells you will ever have, about 100 billion Your brain grows connections between nerve cells, making your brain more dense Every single brain cell can form connections with around 10,000 other nerve cells
5. Humans – the best brain!
6. More Highly Evolved?
7. The Human Brain The brain is the control center for all human behaviour, without understanding our brains and nervous systems we can never fully understand behaviour. Some scientists argue that all human behaviour can be traced to biological functioning. Our Brains are our most important organ, they make us who we are. The bigger an organisms cortex the more intelligent it seems to be – this is NOT true within species Whether or not the brain is the sole seat of consciousness it is most certainly part of the puzzle…… Learning and Memory involve physical changes in your brain!
8. Does your brain look like this?
9. The hemispheres of the Cerebral Cortex The corpus Callosum
10. The hemispheres of the Cerebral Cortex The cortex is made up of two separate but linked hemispheres (halves) Each hemisphere (left or right) is responsible for movement and sensation in the opposite side of the body. Each hemisphere is also involved in specific functions i.e. the left side controls our ability to use and understand language The two hemispheres are linked by a bundle of nerves (neurons) called the Corpus Callosum
11. The Cross over…. Left controls Right Right controls Left No one knows why so don’t ask! This diagram is from the back Note sexy yellow budgie smugglers
12. The Lobes of the cortex
13. The Lobes of the cortex Each hemisphere of the cortex can be divided further into 4 lobes (Frontal, Parietal, Occipital, Temporal) FPOT These lobes are also responsible for specific behaviours, i.e. the frontal lobes control emotional behaviour, planning etc. These Lobes also receive and processes information from a particular sense. Occipital lobes = visual information, Temporal lobes= Auditory (sound) Parietal lobes= somatosensory (body and skin) Frontal lobes. This lobe is involved in initiating movement of the body, They are the only lobes that do not process info from a specific sense are the
14. The Lobes of the cortex These lobes cover both the left and right hemispheres – Note that hemispheric specialization still stands (eg. Left hemisphere predominately involved in language) Left frontallobe – speech production – motor movement in frontal lobe Left temporallobe – speech comprehension – auditory info in temporal
15. Read / skim through pages 177 – 182 and complete the following in your workbooks: L.A 4.1 => Questions 2,3,4,5 & 6 L.A 4.2 => Questions 1, 2 & 3
16. The Four Lobes of the CerebralCortex Read from 182 – 198 and complete the following: L.A 4.3 – Complete in pencil in your textbook L.A 4.6 – Complete in pencil in your textbook L.A 4.7 – All questions (Question 2 – a rough sketch will do)