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. 2011 Apr 20;5:26. doi: 10.3389/fnana.2011.00026

Figure 4.

Figure 4

Somatotopy of the subthalamic nucleus (STN) and substantia nigra (SN). (A) Somatotopy of the STN is shown in a frontal section. In the dorsal part of the STN, the lateral part receives somatotopic inputs from the MI, and the medial part from the SMA. The MI also projects partly to the medial part, and the SMA to the lateral part. Ventral to the motor territory, there exist the oculomotor and prefrontal territories. The most medial part is occupied by the limbic territory. Modified from Nambu et al. (2002b). (B) Input from motor cortices to the STN is schematically shown in a horizontal section. Modified from Takada et al. (2001). (C) Somatotopy of the SNr is shown in a frontal section. The orofacial region of the SNr is a continuation of that of the GPi (see Figure 5). Ventral to the motor territory, there exist the oculomotor and prefrontal territories.