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Brain plasiticity
brains ability to modify own structure and function as experience of learning.
children have higher plasticity.
Synaptic pruning
when old connections are deleted, and frequently used connections are strengthened.
Maguires research
compared brain of taxi drivers to a control group (non taxi drivers)
Findings: found more time in job lead to larger posterior hippocampuses.
shows learning new skills can lead to physical changes in brain. (supports brain plasticity )
Draganski research
Researched brain of medical students who were studying for an exam.
Findings: intense studying led to brain adapting and grown in memory areas.
Shows brain can change as a result of learning and growing.
functional recovery
When Brain experiences trauma and damage, functional recovery is brains way of fixing itself.
forming new connections
parts of brain taking over roles
How brain recovers
axonal sprouting: new branches form near damaged area. Restore lost communication pathways.
Reformation of blood vessels: new blood vessels form to improve O2 flow
Recruitment of homologous: same area on opposite side takes over role.
Strengths - practical application
helped improve treatment for those suffering brain injuries.
brain can change/make new connections so can be relearnt
rehabilitation programmes offer exercises like physiotherapy and help brain form new connections
helps improve quality of life
strength - support by animal studies
Hubel and wiesel: sewed the eye of a kitten to see if they would adapt
visual cortex didnt stop working but instead the kitten adapted to process info out of the one eye
proves that the brain is flexible and able to adapt
limitation - age and plasticity
plasticity is not limited to younger people
bezzola et al - studying 40 hours of golf training in ppt aged 40-60. neuroimaging revealed increased motor cortex activity in trained than control
adults brain retain ability to adapt ij response to learning
does continue throughout lifespan