Fig. 3: The Stroop effect involves a lateralized fronto-cerebellar loop during stimulus perception.
From: The Stroop effect involves an excitatory–inhibitory fronto-cerebellar loop
a Statistical activation maps for signal increase and decrease in the contrast between incongruent and congruent trials in the Stroop task (P < 0.05, FWE-corrected across the whole-brain based on non-parametric permutation tests). The vocal and manual conditions were collapsed. Maps are overlaid onto a 3D surface of the brain. Hot and cool colors indicate signal increase and decrease in the incongruent trials, respectively. Arrowheads indicate anatomical locations of major activations. lPFC: lateral prefrontal cortex; PPC: posterior parietal cortex; OTC: occipitotemporal cortex; mPFC: medial prefrontal cortex; ACC: anterior cingulate cortex. b Statistical maps of brain regions showing differential Stroop effect activation (a) between the left and right hemispheres. Hot and cool colors indicate greater activity in the left and right hemispheres, respectively. c Task-related effective connectivity analysis between lPFC and cerebellar regions based on dynamic causal modeling. The values indicate estimates of the connectivity and their p-values calculated based on posterior probability density (one-tailed, uncorrected) are shown in parentheses next. The arrow directions indicate task-related effective connectivity. The magenta and green arrows indicate positive and negative effects, respectively.
