Figure 5.

Attentional load-dependent modulation of γ-band amplitudes is correlated with individual attentional capacity. A, Individual capacity values in T1 (see Fig. 4A) were used as the regressand in a correlation analysis after detrending with population mean performance, individual zero-meaning, and normalization to unit area under curve at the population level (see Materials and Methods). The y-axis displays the normalized capacity values. B, In T1, θ- and α-band suppression and the strengthening of β- and γ-band amplitudes with attentional load were correlated with individual attentional capacity. C, The load-dependently strengthened γ-band amplitudes were correlated with individual capacity limitations in several visual cortical regions in OC, TC, and PPC but also in distributed regions of LPFC and in cingulate and insula. D, Normalized capacity values for T2 as in A. E, In T2, load-dependent increase in oscillation amplitudes in all frequency bands was correlated positively with individual capacity. F, In θ–α-bands, positive correlations originated mainly from distributed visual regions in OC and TC and from PPC. In β- and γ-bands, the correlations between attentional capacity and load-dependent modulations were also observed in SM and throughout the LPFC.