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. 2013 Sep 13;7:565. doi: 10.3389/fnhum.2013.00565

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Copyright © 2013 Hess.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Schematic of the pathways of the basal ganglia-thalamocortical network that non-invasive transcranial electrical stimulation could potentially influence. Unfilled arrows are excitatory connections. Filled arrows are inhibitory connections. D1 = D1 dopaminergic receptors; D2 = D2 dopaminergic receptors; GABA = γ-Aminobutyric acid (GABA)-ergic; Glu = glutaminergic; Gpe = external segment of the globus pallidus; Gpi = internal segment of the globus pallidus; SNc = substantia nigra pars compacta; SNr = substantia nigra pars reticulata; STN = subthalamic nucleus; Thal = thalamus. Modified with permission from Hess et al. (2013).