Plasticity and functional recovery of the brain after trauma
- Created by: karinagrewal
- Created on: 11-09-19 11:51
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- Plasticity and functional recovery of the brain after trauma
- Brain Plasticity
- The brain's tendency to change and adapt as a result of experience and learning
- During infancy
- Rapid growth in the number of synaptic connections
- Peaks at 15,000 for 2-3 year olds
- Twice as many as in an adult brain
- As we age, rarely used connections are deleted and frequently used connections are strengthened
- Twice as many as in an adult brain
- SYNAPTIC PRUNING
- Research into plasticity
- Maguire el al (2000)
- Studied the brain of london taxi drivers
- Significantly more volume of grey matter in the posterior hippocampus than in control group
- This part is associated with spatial and navigational skills
- As a part of their training, they have to take "The knowledge" in which they have to name streets and routes
- Significantly more volume of grey matter in the posterior hippocampus than in control group
- This part is associated with spatial and navigational skills
- Significantly more volume of grey matter in the posterior hippocampus than in control group
- Significantly more volume of grey matter in the posterior hippocampus than in control group
- Studied the brain of london taxi drivers
- Draganski et al (2006)
- Imaged the brain of medical students, 3 months before their final exam
- Changes were seen to occur in the posterior hippocampus and the parietial cortex.
- Imaged the brain of medical students, 3 months before their final exam
- Mechelli et al
- larger parietal cortex in brains of people who were bilingual
- Maguire el al (2000)
- Functional recovery of the brain after trauma
- Other areas of the brain are able to adapt and over compensate for others
- A form of plasticity.
- Following a damage through trauma, the brain's ability to redistribute or transfer functions usually performed by a damaged section
- What happens in the brain during recovery?
- The brain is able to rewire and reorganize by forming new synaptic connections.
- secondary neural pathways that were not typically used are now used
- Axonal sprouting
- the growth of new nerve endings which connect with other undamaged nerve cells to form new neuronal pathways
- Reformation of blood vessels
- Recruitment of homologous areas
- on the opposite part of the brain to perform specific tasks
- Axonal sprouting
- secondary neural pathways that were not typically used are now used
- The brain is able to rewire and reorganize by forming new synaptic connections.
- Brain Plasticity
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