Hebb�s rule 1949
association rule: co-activity tween input/output
if you have the pre-synaptic input present at the same time as the output firing
work out which is the receiving/sending neuron
connectionists: horizontal
rolls/anatomists: vertical
firing rate r
r prime = firing rate of input axon
synaptic weights/strengths w
weight from the jth input onto the ith output
if post-synaptic potential exceeds threshold, then fires
linear
threshold linear
sigmoid activation function � like the brain, S-shaped curve
binary threshold
hebb rule - if you have the pre-synaptic input present at the same time as the output firing � multiplication: if one is not present, then multiply by zero
linearly re-weighted sum
decrease the synaptic weight too?