"This is hot because it suggests that a ‘memory trace’ was not stored in the form of synapses. Rather, it suggests that the sensory neuron itself has a memory of how many synapses it ought to be forming – with the actual synapses being merely an expression of this memory. This is pretty radical: it amounts to saying that the location of memory is not in the synapses, but (probably) in the cell nuclei of presynaptic neurons." - Todd Hoff