Figure 4.
The plot of D3 vs. D2 action potential durations of each recorded neurons. Black and open circles correspond to neurons with the “short” and “long” action potentials, respectively. The linear regression analysis was done only for neurons with “short” action potentials (thick line), which shows a strong correlation between the D3 and D2. The plot of D3 = 1.7*D2 (thin line) separates the recorded neurons that discharged with the “short” and “long” action potentials.