PMC

Diagrammatic representation of the unfolded lateral (A) and medial (B) surfaces of the cerebral hemisphere in case 1 with isotope injection in frontopolar area 10 (shown in solid black) and the resulting distribution of terminal label (shown as dots). In A, the principal sulcus, the upper and inferior limbs of the arcuate sulcus, the lateral fissure, and the superior temporal sulcus have been opened up to show the terminal label in their banks. In B, the cingulate sulcus has been opened up. AF, Arcuate fasciculus; AMG, amygdala; AS, arcuate sulcus; ASi, arcuate sulcus (inferior ramus); ASu, arcuate sulcus (upper ramus); CING S, cingulate sulcus; CF, calcarine fissure; CS, central sulcus; Extm F, extreme capsule fasciculus; FOF, fronto-occipital fasciculus; IC, internal capsule; LF, lateral fissure; IPS, intraparietal sulcus; IOS, inferior occipital sulcus; LOS, lateral orbital sulcus; MOS, medial orbital sulcus; OTS, occipitotemporal sulcus; Presub, presubiculum; PS, sulcus principalis; RS, rhinal sulcus; Rsp, retrosplenial cortex; SLF I, superior longitudinal bundle I; SLF II, superior longitudinal bundle II; SLF III, superior longitudinal bundle III; St B, striatal bundle; STS, superior temporal sulcus.

(A) Coronal sections and the respective labeled cells (red dots) from the validation retrograde tracing injection in caudal 47/12 (case 4b). 3D models represent the location of coronal slices. (B) Coronal sections and the respective labeled terminal fields from the validation anterograde tracer injections in the dACC and AI (red areas correspond to dense axonal projections and green areas to light axonal projections). Abbreviations: arsp = arcuate sulcus spur; cgs = cingulate sulcus; cir = circular sulcus; iar = inferior arcuate sulcus; los = lateral orbital sulcus; mos = medial orbital sulcus; ps = principal sulcus; sar = superior arcuate sulcus.

Line drawings of cortical injection sites on the lateral wall of the monkey (Macaca mulatta) cerebral hemisphere giving rise to terminal labeling in the hypoglossal nucleus of cranial nerve XII. Cortical sulci that are “opened” are indicated by the dashed lines around the solid line (representing the fundus). Abbreviations: cs, central sulcus; ec, ectocalcarine sulcus; ilas, inferior limb of the arcuate sulcus; ios, inferior occipital sulsus; ips, intraparietal sulcus; LPMCd, dorsal lateral premotor cortex; LPMCv, ventral lateral premotor cortex; lf, lateral fissure; ls, lunate sulcus; M1, primary motor cortex; ProM, proisocortical motor area (according to the terminology of , ); ps, principle sulcus; S1, primary somatosensory cortex; SDM, South Dakota Monkey; slas, superior limb of the arcuate sulcus; STS, superior temporal sulcus.

Line drawings of cortical injection sites located in the dorsal (d) and ventral (v) regions of the lateral premotor cortex (LPMC) of the monkey (Macaca mulatta). The arcuate sulcus has been opened which is indicated by the dashed lines around the solid line (the later representing the fundus of the sulcus). Injection sites are color coded for respective dextran tracer and match the legend in the bottom center of the diagram. The solid line within each injection site marks the estimated boundary between the injection site core (in center) and halo which is external to the core region. Cytoarchitectonic borders of the lateral premotor region (areas 4, 6DC, 6DR, 6Va and 6Vb, according to , and ) are marked by the light gray lines. Abbreviations : cs, central sulcus; ec, ectocalcarine sulcus; D, digit; El, elbow; ilas, inferior limb of the arcuate sulcus; ios, inferior occipital sulcus; ips, intraparietal sulcus; L, leg; LL, lower lip; LPMCd, dorsal lateral premotor cortex; LPMCv, ventral lateral premotor cortex; lf, lateral fissure; ls, lunate sulcus; M1, primary motor cortex; N, neck; NR, no response; ps, principle sulcus; SDM, South Dakota Monkey; Sh, shoulder; slas, superior limb of the arcuate sulcus; sts, superior temporal sulcus; Th, thumb; Tr, trunk; UL, upper lip; Wr, wrist.