This led Traub to develop an innovative model based on networks of fast synapses using glutamate and GABA as their transmitters. The point of this particular figure was to show that the gamma rhythm is projected to the subiculum, presumably via CA1 pyramidal neuron axons in the alveus. It also shows that, if a second stimulus delivered to the other end of CA1, say at 1.0mm, evoked an oscillation in a similar area of tissue, then there would be no more than 0.2mm separating the oscillating areas, much less than the apparent 1mm. In fact it now looks as though oscillating regions become synchronised if they fuse into one single oscillating focus. Recordings not made synchronously.
Limbic gamma rhythms.
I. Phase-locked oscillations in hippocampal CA1 and subiculum.