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Published on: August 30, 2019
Superior longitudinal fasciculus subserves vestibular network in humans
Giannantonio Spena1, Peggy Gatignol, Laurent Capelle
1Department of Neurosurgery, University of Genova, San Martino Hospital, San Martino, Genova, Italy.
Neuroreport
|August 26, 2006
Summary
Subcortical brain stimulation in conscious patients revealed that the superior longitudinal fasciculus transmits vestibular symptoms. This finding highlights its crucial role in the brain
Area of Science:
- Neuroscience
- Neuroanatomy
- Neurophysiology
Background:
- The brain's large-scale network for vestibular function is well-studied cortically, but subcortical connections remain less understood.
- Vestibular system processing involves complex multimodal integration within the brain.
Purpose of the Study:
- To investigate the subcortical anatomo-functional connectivity related to vestibular function.
- To identify specific white matter tracts involved in the propagation of vestibular symptoms during brain surgery.
Main Methods:
- Direct subcortical electrical stimulation was performed on three conscious patients undergoing surgery for low-grade gliomas.
- Intraoperative findings of elicited vestibular symptoms were correlated with postoperative imaging.
Main Results:
- Subcortical stimulation in conscious patients elicited distinct vestibular symptoms.
- Anatomo-functional correlations indicated the superior longitudinal fasciculus (SLF) is involved in spreading these vestibular symptoms.
- The SLF appears to be a key pathway for functional connectivity in the vestibular network.
Conclusions:
- The superior longitudinal fasciculus plays a significant role in the subcortical functional connectivity of the brain's vestibular network.
- Understanding these pathways is crucial for neurosurgical interventions and for elucidating vestibular processing.
- This study provides novel insights into the subcortical organization of vestibular information processing.
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