From Hebbian Rule To STDP
According to the Hebbian Rule synapses increase their efficiency if the synapse persistently causes the postsynaptic target neuron to generate action potentials. An often used but not entirely accurate simplification is those who fire together, wire together. With recent advancements in technology we can more precisely measure the spike timing of neurons. As it turns out, the synaptic connection between two neurons is more likely to strengthen if the presynaptic neuron fires off shortly before the postsynaptic neuron. Revisiting the Hebbian rule, we can tweak it to accommodate these temporal aspects. Synapses increase their efficacy if the presynaptic spike arrives before the postsynaptic neuron is activated.
Read more about this topic: Spike-timing-dependent Plasticity
Famous quotes containing the word rule:
“The first rule of education for me was discipline. Discipline is the keynote to learning. Discipline has been the great factor in my life. I discipline myself to do everything—getting up in the morning, walking, dancing, exercise. If you won’t have discipline, you won’t have a nation. We can’t have permissiveness. When someone comes in and says, “Oh, your room is so quiet,” I know I’ve been successful.”
—Rose Hoffman, U.S. public school third-grade teacher. As quoted in Working, book 8, by Studs Terkel (1973)