Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
brain plasticity
Roles of brain plasticity in infancy and adolescent behaviour
| Question | Answer |
|---|---|
| developmental plasticity | Generally, an infant or child’s brain will have more plasticity than an adult’s brain - which is the ability of synapses to be modified |
| liifetime | Although changes to the brain occur moost frequently in the feotal stage, as well as infancy, childhood and adolescence (developmental) these changes continue throughout life as learning takes place (adaptive plastictiy) and do not diminish with age |
| 5 stages | o Proliferation o Migration o Circuit formation o Synaptic pruning o Myelination developmeng starts before brain formed. quite flexible -1 - 1 yr old |
| Proliferation | • Proliferation is the division and multiplication of the unborn babys cell that will become neurons, which creates approximately 250 000 cells per minute • This process marks the beginning of the development of the nervous system |
| Migration | newly formed neurons move outward to their destined location. The role that a particular neuron has might be determined by where it is located at the time of its formation Different brain structures form during different stages of development. |
| neuron ttransplant | neurons are flexible when young. brain tissue of feotus can be transplanted into adult. will adapt, form synapses and tail function of brain area |
| Circuit formation | Occurs when the axons of the new neurons grow out to target cells and form synapses with them E.g. axons for motor neurons grow to the spinal cord This process of fornming new synapses is also referred to as synaptogenesis |
| Synaptic pruning | elimination of excess neurons and synapses ( e.g. those that haven’t established a connection with another neuron, or a neuron that doesn’t fire at the same time as its neighbouring neuron occurs in childhood and during adolescence. |
| Myelination | Myelination is when gradually throughout childhood and adolescence and into young adulthood ~ about 23 years of age ~ myelin sheathing grows around the axons of many of the neurons, insulating them and making neural transmission more efficient |
Created by:
procrast
Popular Psychology sets