TY - JOUR
TI - Dorsal component of the superior longitudinal fasciculus revisited: Novel insights from a focused fiber dissection study
AU - Komaitis, S.
AU - Skandalakis, G.P.
AU - Kalyvas, A.V.
AU - Drosos, E.
AU - Lani, E.
AU - Emelifeonwu, J.
AU - Liakos, F.
AU - Piagkou, M.
AU - Kalamatianos, T.
AU - Stranjalis, G.
AU - Koutsarnakis, C.
JO - EGYPTIAN JOURNAL OF NEUROSURGERY
PY - 2020
VL - 132
TODO - 4
SP - 1265-1278
PB - American Association of Neurological Surgeons
SN - null
TODO - 10.3171/2018.11.JNS182908
TODO - adult;  anterior cingulate;  Article;  cingulate gyrus;  cingulum (brain);  hemisphere;  human;  human tissue;  left hemisphere;  microdissection;  parieto-occipital sulcus;  precuneus;  priority journal;  right hemisphere;  superior frontal gyrus;  superior longitudinal fasciculus;  supplementary motor area;  topography
TODO - Objective: The aim of this study was to investigate the anatomical consistency, morphology, axonal connectivity, and correlative topography of the dorsal component of the superior longitudinal fasciculus (SLF-I) since the current literature is limited and ambiguous. Methods: Fifteen normal, adult, formalin-fixed cerebral hemispheres were studied through a medial to lateral fiber microdissection technique. In 5 specimens, the authors performed stepwise focused dissections of the lateral cerebral aspect to delineate the correlative anatomy between the SLF-I and the other two SLF subcomponents, namely the SLFII and SLF-III. Results: The SLF-I was readily identified as a distinct fiber tract running within the cingulate or paracingulate gyrus and connecting the anterior cingulate cortex, the medial aspect of the superior frontal gyrus, the pre-supplementary motor area (pre-SMA), the SMA proper, the paracentral lobule, and the precuneus. With regard to the morphology of the SLF-I, two discrete segments were consistently recorded: an anterior and a posterior segment. A clear cleavage plane could be developed between the SLF-I and the cingulum, thus proving their structural integrity. Interestingly, no anatomical connection was revealed between the SLF-I and the SLF-II/SLF-III complex. Conclusions: Study results provide novel and robust anatomical evidence on the topography, morphology, and subcortical architecture of the SLF-I. This fiber tract was consistently recorded as a distinct anatomical entity of the medial cerebral aspect, participating in the axonal connectivity of high-order paralimbic areas. © AANS 2020, except where prohibited by US copyright law.
ER -