where T = duration (ms), d = distance between Brodmann areas (millimeters) and b1, b2, and b3 are coefficients. The coefficients were derived using Data Desk statistical package (Velleman, 1997). The regression to Equation (1) was statistically significant but in opposite directions for phase shift vs. phase lock duration. Brodmann area pairs that exhibited short phase shift durations also exhibited long phase lock durations while Brodmann areas that exhibited long phase shift durations exhibited short phase lock durations as shown in Figure 5. The coefficients of the equation are in Table 3. The coefficients in Table 3 allow one to test the hypotheses in this study by simply entering Talairach Euclidian distances between voxels of the brain into an Excel worksheet and then compute the predicted phase lock and phase shift durations. Shifts in the intercept b1 will result in shifts in the starting point of the function.
