Figure 8.

Comparison of spiking activities in lALT neurons and mALT neurons. (A) Comparison of minimum and mean ISI in unilateral lALT neurons and mALT neurons before stimulation. (B) Average spike frequencies (bin-size: 50 ms) of all unilateral lALT neurons and mALT neurons. Gray bar: duration of the stimulus (400 ms). The different response strengths of these two types of neurons are shown in the inset. *p < 0.05. (C) Heat map of all neurons’ responses during stimulus applications. Each row plots the mean of Δz-scored IFR (Instantaneous firing rate) of each neuron to the same repeated stimulus during the 400 ms stimulation window. The Δz-scored IFR was computed by subtracting the response threshold from the z-scored IFR. (D) The latency of response onset and response peak in medial-tract vs. the two types of lateral-tract neurons with excitatory responses to the natural blend (top) and the primary pheromone (bottom). *p < 0.05. (E) Comparison of response timing patterns (from the onset to the peak) across all excitatory lateral-tract and medial-tract neurons. The lateral-tract neurons illustrated a consistent and rapid timing pattern to both pheromone mixture (NB) and primary pheromone alone (PP; Wilcoxon test, p > 0.14).