Figure 6.

Effective connectivity analysis based on DCM. A, Effective connectivity and extrinsic inputs modulated in switch trials relative to repeat trials during motion tasks. Red arrows indicate enhancements of connectivity in switch trials. Blue arrows indicate enhancements of connectivity in repeat trials. Solid and dotted lines indicate effective connectivity that is statistically significant (p < 0.05; uncorrected) and insignificant, respectively. Positive values indicate connectivity enhancements in switch trials. Negative values indicate connectivity enhancements in and repeat trials. B, Effective connectivity and extrinsic inputs modulated in switch relative to repeat trials during color tasks. The formats are similar to those in A. C, Effective connectivity and extrinsic inputs modulated by motion coherence during motion tasks. Red arrows indicate enhancements in high-coherence trials. Blue arrows indicate enhancements in low-coherence trials. Solid and dotted lines indicate effective connectivity that was statistically significant (p < 0.05; uncorrected) and insignificant, respectively. Positive values indicate connectivity enhancements in high-coherence trials. Negative values indicate connectivity enhancements in low-coherence trials. D, Effective connectivity and extrinsic inputs modulated by color coherence during color tasks. The formats are similar to those in C.