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psychology un4 ch12
the neural basis of learning
| Term | Definition |
|---|---|
| Adaptive plasticity | The ability of the brain to change,adapt and group throughout life (but does diminish with age). |
| Circuit formation | Axons of new neurons growing out to target cells and form synapses with them. |
| Circuit pruning | The elimination of excess neurons and synapses. |
| Critical periods | Narrow period of time in an animal's development when it must have a certain experience to ensure specific learning. |
| Developmental plasticity | The ability of synapses to be modified as an infant or child. |
| Experience-dependent learning | Learning which occurs at any time during an individual's life as a result of experience. |
| Experience-expectant learning | Occurs during sensitive periods and refers to experiences necessary for learning to occur. |
| Migration | During developmental plasticity, the movement of newly formed neurons. |
| Myelination | A process in the brain whereby the axons of the neurons in a child's brain become covered in myelin, a white, fatty covering that insulates a neuron's axon and speeds transmission, continuing until the early 20s. |
| Neural pathway | Bundles of neurons which provide connections between one part of the nervous system and another. |
| Neurotransmitter | Chemicals that help the communication across nerve synapses. |
| Proliferation | The first stage in the development of the nervous system, where cells destined to become neurons multiply. |
| Reorganisation | A reordering of neural connections so that an existing part of the brain adopts a new function. |
| Sensitive periods | Periods in time which are particularly suited to learning things due to the nature of the growing brain. |
| Synapse formation (synaptogenesis) | The process of moulding or forming new synapses. |