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. Author manuscript; available in PMC: 2020 Feb 1.
Published in final edited form as: Cortex. 2018 Nov 1;111:148–163. doi: 10.1016/j.cortex.2018.10.015

Figure 2.

Figure 2.

The cortico-basal ganglia circuits involved in speech production (left lateralized) and inhibitory control (right lateralized). The yellow path indicates the Frontal Aslant Tract (FAT). The orange path indicates the cortico-striatal tracts. Pre-SMA = pre-supplementary motor area; SMA = supplementary motor area; STN = subthalamic nucleus; thalamus VA/VL = ventral anterior and ventral lateral thalamic nuclei; GPe and GPi = globus pallidus external and internal; SNc = substantia nigra, pars compacta; SNr = substantia nigra, pars reticulata. CP = Cerebral peduncle. Pu = Putamen. Cd = Caudate. MD = Medialdorsal nucleus of thalamus. CG = Cingulate gyrus. ACC = Anterior cingulate cortex. SC = superior colliculus. Green arrows indicate excitatory connections. Red arrows indicate inhibitory connections. Hashed green arrows indicate originating fibers from multiple cortical areas arriving together in the internal capsule as they pass to their targets.