The superior longitudinal fascicle: reconsidering the fronto-parietal neural network based on anatomy and function

Nakajima, Riho; Kinoshita, Masashi; Shinohara, Harumichi; Nakada, Mitsutoshi

doi:10.1007/s11682-019-00187-4

Cited by 126 publications

(129 citation statements)

References 106 publications

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“…Its activity is associated with many key functions necessary in everyday life, such as speech, using tools, thinking ahead, and empathy. It is also involved in the control of spatial and visual function, motor skills, the process of hearing, and comprehending that which one hears and reads [ 24 , 38 ]. In the course of schizophrenia, decreases in FA are observed in this structure [ 20 , 30 , 31 , 36 ].…”

Section: White Matter Abnormalities In Schizophreniamentioning

confidence: 99%

“…Descriptions of commonly used bundles and their functions in DTI studies[23][24][25][26][27][28] Connects identical cortical areas in both brain hemispheres Processing input and output signals from each hemisphere; coordination of thought processes and behavior Cingulum bundle Association fiber Connects the areas of the frontal, parietal, temporal lobes; connects the subcortical nuclei to the cingulate gyrus; connects various elements of the limbic system with each other Controls executive functions; attention; emotional and motivational processes; socio-emotional processes; episodic memory; pain Uncinate fasciculus Association fiber Connects the lateral parts of the orbito-frontal cortex with the anterior part of the temporal lobe Episodic memory; language processes; socio-emotional processes Arcuate fasciculus Association fiber Connects the frontal lobe to the temporal lobe Speech comprehension; speech and language processes Superior longitudinal fascicles Association fiber Connects the frontal lobe to the parietal lobe and partly to the temporal lobe Visual-spatial functions; motor control; hearing and articulation processes; understanding the content of heard and read text; speech processes; using tools Inferior longitudinal fasciculus Association fiber Connects the occipital lobe to the temporal lobe Visual processes; emotional processes; behavior related to vision; visual cognition; visual memory…”

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confidence: 99%

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Magnetic resonance diffusion tensor imaging in psychiatry: a narrative review of its potential role in diagnosis

et al. 2020

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Diffusion tensor imaging (DTI) is an imaging technique that uses magnetic resonance. It measures the diffusion of water molecules in tissues, which can occur either without restriction (i.e., in an isotropic manner) or limited by some obstacles, such as cell membranes (i.e., in an anisotropic manner). Diffusion is most often measured in terms of, inter alia, fractional anisotropy (FA), mean diffusivity (MD), radial diffusivity (RD), and axial diffusivity (AD). DTI allows us to reconstruct, visualize, and evaluate certain qualities of white matter. To date, many studies have sought to associate various changes in the distribution of diffusion within the brain with mental diseases and disorders. A better understanding of white matter integrity disorders can help us recognize the causes of diseases, as well as help create objective methods of psychiatric diagnosis, identify biomarkers of mental illness, and improve pharmacotherapy. The aim of this work is to present the characteristics of DTI as well as current research on its use in schizophrenia, affective disorders, and other mental disorders.

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Section: White Matter Abnormalities In Schizophreniamentioning

confidence: 99%

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confidence: 99%

Magnetic resonance diffusion tensor imaging in psychiatry: a narrative review of its potential role in diagnosis

et al. 2020

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“…When the branches were specified, there was a variety of terminologies, including the three branches SLFI-III (Thiebaut de Schotten et al, 2011), or a lobar separation of an SLFtp (temporal projections) and SLFpt (parietal projections) ( e.g . Nakajima et al 2019). Similarly, the arcuate was either considered in its entirety or was split into several branches, classified as the long, anterior, and posterior segments or the horizontal and vertical branches ( e.g .…”

Section: Discussionmentioning

confidence: 99%

White matter variability, cognition, and disorders: a systematic review

Forkel

Friedrich

Schotten

et al. 2020

Preprint

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Inter-individual differences can inform treatment procedures and - if accounted for - can significantly improve patient outcomes. However, when studying brain anatomy, these inter-individual variations are largely unaccounted for, despite reports of differences in gross anatomical features, cross-sectional and connectional anatomy. Brain connections are essential to mediate brain functional organisation and, when severed, cause functional impairments or complete loss of function. Hence the study of cerebral white matter may be an ideal compromise to capture inter-individual variability in structure and function. Here we reviewed the wealth of studies that associate functions and clinical symptoms with individual tracts using diffusion tractography. Our systematic review indicates that tractography has proven to be a sensitive method in neurology, psychiatry and healthy populations to identify variability and its functional correlates. However, the literature may be biased, as we identified that the most commonly reported tracts are not necessarily those with the highest sensitivity to cognitive functions and pathologies. Finally, we demonstrate that tracts, as we define them, are not usually correlated with only one, but rather multiple cognitive domains or pathologies. While our systematic review identified some methodological caveats, it also suggests that tract-function correlations might be a promising biomarker for precision medicine as it characterises variations in brain anatomy, differences in functional organisation and predict resilience or recovery in patients.

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“…These areas included the inferior cerebellar peduncle, which transmits information between the vestibular receptors and the cerebellum, and the right inferior and posterior parietal lobe, which integrate vestibular and proprioceptive information and play an important role in perception of the spatial representation of the body and upright perception 16 . Lee et al also noted WM changes in regions related to vision and visual processing, including the superior longitudinal fasiculus (SLF), which plays an important role in visuospatial processing, visual attention, and visuomotor control 16,26 . Interestingly, greater changes in the SLF in astronauts was found to be correlated with larger postflight balance disruptions 16 .…”

Section: Changes To Cerebrospinal Fluid Circulation After Spaceflightmentioning

confidence: 99%

A review of alterations to the brain during spaceflight and the potential relevance to crew in long-duration space exploration

2021

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During spaceflight, the central nervous system (CNS) is exposed to a complex array of environmental stressors. However, the effects of long-duration spaceflight on the CNS and the resulting impact to crew health and operational performance remain largely unknown. In this review, we summarize the current knowledge regarding spaceflight-associated changes to the brain as measured by magnetic resonance imaging, particularly as they relate to mission duration. Numerous studies have reported macrostructural changes to the brain after spaceflight, including alterations in brain position, tissue volumes and cerebrospinal fluid distribution and dynamics. Changes in brain tissue microstructure and connectivity were also described, involving regions related to vestibular, cerebellar, visual, motor, somatosensory and cognitive function. Several alterations were also associated with exposure to analogs of spaceflight, providing evidence that brain changes likely result from cumulative exposure to multiple independent environmental stressors. Whereas several studies noted that changes to the brain become more pronounced with increasing mission duration, it remains unclear if these changes represent compensatory phenomena or maladaptive dysregulations. Future work is needed to understand how spaceflight-associated changes to the brain affect crew health and performance, with the goal of developing comprehensive monitoring and countermeasure strategies for future long-duration space exploration.

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The superior longitudinal fascicle: reconsidering the fronto-parietal neural network based on anatomy and function

Cited by 126 publications

References 106 publications

Magnetic resonance diffusion tensor imaging in psychiatry: a narrative review of its potential role in diagnosis

Magnetic resonance diffusion tensor imaging in psychiatry: a narrative review of its potential role in diagnosis

White matter variability, cognition, and disorders: a systematic review

A review of alterations to the brain during spaceflight and the potential relevance to crew in long-duration space exploration

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