What does the MLF do?
What does the MLF do?
The MLF is a fiber tract located directly ventrolateral to the oculomotor nucleus that interconnects the oculomotor nucleus, trochlear nucleus, and abducens nucleus (Figure 1). The MLF serves to facilitate yoked eye movements (i.e., simultaneous abduction of the right eye and adduction of the left or vice versa).
Where is the MLF found?
brain stem
The MLF are a group of fiber tracts located in the paramedian area of the midbrain and pons. They control horizontal eye movements by interconnecting oculomotor and abducens nuclei in the brain stem.
Where does the MLF cross?
The medial longitudinal fasciculus (MLF) is an area of crossed over tracts, on each side of the brainstem. These bundles of axons are situated near the midline of the brainstem….
| Medial longitudinal fasciculus | |
|---|---|
| FMA | 83846 |
| Anatomical terms of neuroanatomy |
What is dorsal longitudinal fasciculus?
The dorsal longitudinal fasciculus is found within the dorsal brainstem tegmentum. It passes through the periaqueductal gray matter and contains both ascending and descending fibers. The ascending fibers pass from the reticular formation passing to the hypothalamus thus transmitting information related to the viscera.
What is lateral longitudinal fasciculus?
Definition: The lateral longitudinal fascicule is an ascending bundle of axons. The LLF contains fibers of the auditory and mechanosensory systems which originate in the primary sensory brainstem nuclei and terminate in the torus semicircularis.
Where does the medial longitudinal fasciculus originate?
Containing both ascending and descending fiber tracts, the MLF is found on each side of the brainstem near the midline, ventral to the periaqueductal grey matter, and ascends to the interstitial nucleus (of Cajal) 1.
What does medial longitudinal fasciculus do?
The medial longitudinal fasciculus links the three main nerves which control eye movements, i.e. the oculomotor, trochlear and the abducent nerves, as well as the vestibulocochlear nerve. The purpose of the medial longitudinal fasciculus is to integrate movement of the eyes and head movements.
What is the dorsal fasciculus?
The dorsal longitudinal fasciculus (DLF) (not to be confused with the medial longitudinal fasciculus, nor the superior longitudinal fasciculus) is a white matter fiber tract located within the brain stem, specifically in the dorsal brainstem tegmentum. The DLF travels through the periaqueductal gray matter.
What is the superior longitudinal fasciculus?
The superior longitudinal fasciculus (SLF) is a large bundle of association fibers in the white matter of each cerebral hemisphere connecting the parietal, occipital and temporal lobes with ipsilateral frontal cortices (Schmahmann et al. 2008).
What is the function of arcuate fasciculus?
The arcuate fasciculus is a bundle of axons that connects the temporal cortex and inferior parietal cortex to locations in the frontal lobe. One of the key roles of the arcuate fasciculus is connecting Broca’s and Wernicke’s areas, which are involved in producing and understanding language.