The superior frontal longitudinal tract: a connection between the dorsal premotor and the dorsolateral prefrontal cortices. Bakhit, M., Fujii, M., Hiruta, R., Yamada, M., Iwami, K., Sato, T., & Saito, K. Scientific Reports, 10(1):15855, September, 2020. Number: 1 Publisher: Nature Publishing Group
The superior frontal longitudinal tract: a connection between the dorsal premotor and the dorsolateral prefrontal cortices [link]Paper  doi  abstract   bibtex   
A few studies have identified the structural connection between the premotor area and the lateral prefrontal cortex (DLPFC) as the frontal longitudinal system (FLS). This study investigated the existence of a direct segment (none U-fibre) of the superior part of the FLS (sFLS), which connects the dorsal premotor cortex (PMd) and DLPFC and analysed its asymmetry and termination point patterns. A dataset of diffusion-weighted images from 48 subjects was used for generalised q-sampling imaging tractography. Additionally, a white-fibre dissection was conducted in two right hemispheres. An analysis of spatial location, termination points, laterality, and correlation with the subjects’ gender or handedness was performed. The sFLS was found to have a deeper longitudinal bundle directly connecting the PMd and DLPFC. The bundle is referred to hereafter as the superior frontal longitudinal tract (SFLT). The SFLT was reconstructed in 100% of right and 88% of left hemispheres. It exhibited variable patterns in different subjects in their posterior terminations. In addition, it was found to possess a complicated spatial relationship with the adjacent bundles. The SFLT was revealed successfully in two cadaveric right hemispheres, where the posterior terminations were found to originate in the PMd independent of the superior longitudinal fasciculus.
@article{bakhit_superior_2020,
	title = {The superior frontal longitudinal tract: a connection between the dorsal premotor and the dorsolateral prefrontal cortices},
	volume = {10},
	copyright = {2020 The Author(s)},
	issn = {2045-2322},
	shorttitle = {The superior frontal longitudinal tract},
	url = {https://www.nature.com/articles/s41598-020-73001-7},
	doi = {10.1038/s41598-020-73001-7},
	abstract = {A few studies have identified the structural connection between the premotor area and the lateral prefrontal cortex (DLPFC) as the frontal longitudinal system (FLS). This study investigated the existence of a direct segment (none U-fibre) of the superior part of the FLS (sFLS), which connects the dorsal premotor cortex (PMd) and DLPFC and analysed its asymmetry and termination point patterns. A dataset of diffusion-weighted images from 48 subjects was used for generalised q-sampling imaging tractography. Additionally, a white-fibre dissection was conducted in two right hemispheres. An analysis of spatial location, termination points, laterality, and correlation with the subjects’ gender or handedness was performed. The sFLS was found to have a deeper longitudinal bundle directly connecting the PMd and DLPFC. The bundle is referred to hereafter as the superior frontal longitudinal tract (SFLT). The SFLT was reconstructed in 100\% of right and 88\% of left hemispheres. It exhibited variable patterns in different subjects in their posterior terminations. In addition, it was found to possess a complicated spatial relationship with the adjacent bundles. The SFLT was revealed successfully in two cadaveric right hemispheres, where the posterior terminations were found to originate in the PMd independent of the superior longitudinal fasciculus.},
	language = {en},
	number = {1},
	urldate = {2022-04-27},
	journal = {Scientific Reports},
	author = {Bakhit, Mudathir and Fujii, Masazumi and Hiruta, Ryo and Yamada, Masayuki and Iwami, Kenichiro and Sato, Taku and Saito, Kiyoshi},
	month = sep,
	year = {2020},
	note = {Number: 1
Publisher: Nature Publishing Group},
	keywords = {Anatomy, Brain, Nervous system},
	pages = {15855},
}

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