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. Author manuscript; available in PMC: 2010 Jul 8.
Published in final edited form as: Neuron. 2001 May;30(2):553–567. doi: 10.1016/s0896-6273(01)00284-7

Figure 4. PN Responses for Different Stimuli and Role of the Strength of LN Inhibition.

Figure 4

Four cells (rows) are shown. The response of each cell has been divided into 11 epochs of about 50 ms, each corresponding to oscillatory cycles of activity. In each epoch, the positions (phases) of the action potentials relative to the maximum of the corresponding field potential were calculated and plotted (rows labeled PN1, PN2, etc.). This operation was repeated 20 times for each odor (rasters within each epoch). The number of Ca2+ spikes in all presynaptic LNs, averaged over 20 trials, is shown for each cycle (rows labeled NLN).

(A and B) During stimulation of similar sets of neurons, almost identical subsets of PNs responded, but with different temporal patterns. (C) A different subset of PNs was stimulated during these trials, and different PNs responded.