Figure 4
Effects of cortical activation on synchronous oscillation in the presence of uniform field noise.

Average power spectra and pulse-cross correlations calculated as for the two short bars moving in the same direction case, in figure 3a. Here uniform amplitude spatio-temporally white noise was applied throughout the field, and both the level of cortical activation (Qns) and the amplitude of the signals associated with the moving bars (Qs) were raised concurrently.