- most numerous kind of fiber within white matter
- never crosses the midline: intrahemispheric
- two mains kinds, short u shaped arcuate fibers ( curved, shaped like a bow ), connect adjacent gyri. long fibers connect distant cortical areas
Five main groups:
- Uncinate fasciculus: connects frontal to temporal lobe
- Superior longitudinal fasciculus: connects frontal, occipital, parietal, and temporal lobes
- Arcuate fasciculus: connects frontal and temporal lobes
- Inferior longitudinal fasciculus: connects occipital to temporal pole
- Cingulum: connects frontal and parietal lobes to para-hippocampal gyrus and adjacent temporal gyri
