Learning
- Learning occurs by synaptic weight modification.
- There's lots of evidence for two types of synaptic modification,
long-term and short-term.
- Learning also happens when new neurons grow or old ones die,
and when new synapses form, or old ones are lost.
- Hebbian learning: when a neuron frequently causes another neuron to
fire, synaptic strength increases.
- The flip side is true.
- This also seems to work with neural and synaptic death and growth.
- One really popular rule now is spike timed dependent plasticity (STDP).
- We've done a lot with Compensatory Hebbian learning.
- There's also some effect of neurotransmitters (for bigger areas).
Learning gets turned on or off in areas.
- Synaptic weight change is less well understood than individual
neural behaviour.
