Figure 6.

Summary of the group results for the optimal four-area dorsal stream model (T/T). Interhemispheric connection strengths were bidirectionally modulated by SDs, regardless of the visual field of stimulation. This task-dependent modulation symmetrically increased interhemispheric connections of SPG (supplemental Table S11, available at www.jneurosci.org as supplemental material). This connectivity pattern in the dorsal stream fits the predictions by the hemispheric recruitment theory. For conventions, see Figure 3. The insets display the results from the random-effects SPM analysis together with the group coordinates of the regions included in the model (p < 0.05, cluster-level corrected, with p < 0.001, voxel-level cutoff; CUN activations are additionally masked by the main effect of task, LD > SD).