Figure 3. Oscillatory Response Increased While Firing Rate Decreased during Repetitive Stimulus Presentations.
(A) Expanded time series shows increase of oscillations during trial 5 compared with trial 1 in the model with GABAA and GABAB facilitation.
(B) (Left) The number of odor-elicited action potentials in PNs decreased markedly during the first two to three trials. All spikes within the 500 ms odor response period were counted. Data from model with only GABAA facilitation (open circuits) and with both GABAA and GABAB facilitation (closed circuits). (Right) Oscillatory (~26 Hz) component of the power spectrum increased during the first three trials.