Lateral pulvinar nucleus explained

Lateral pulvinar nucleus
Latin:	nucleus pulvinaris lateralis
Ispartof:	pulvinar

Lateral pulvinar nucleus (nucleus pulvinaris lateralis) is one of four traditionally anatomically distinguished nuclei of the pulvinar of the thalamus. The other three nuclei of the pulvinar are called anterior, inferior and medial pulvinar nuclei.

Connections

Afferent

• Lateral pulvinar nucleus, together with its inferior and medial nuclei, receives afferent input from superior colliculus.^{[1] [2]}
• The dorsal part of the lateral pulvinar nucleus also receives afferent input from posterior parietal cortex and the dorsal stream cortical areas.

Efferent

• Lateral pulvinar nucleus, together with its inferior nucleus, both have projections to the early visual cortical areas.
• The dorsal part of the lateral pulvinar nucleus also sends its efferent output connections to the posterior parietal cortex and the dorsal stream cortical areas.

Functions

• Lateral pulvinar nucleus, together with its inferior and medial nuclei, is thought to be important for the initiation and compensation of saccadic movements of the eyes. Those nuclei also participate in the visual attention regulation.^{[3] [4]}

Clinical significance

Lesions of the lateral pulvinar nucleus can result in neglect syndromes and attentional deficits.^[5]

Notes and References

1. Berman R. . Wurtz R. . 2011 . Signals conveyed in the pulvinar pathway from superior colliculus to cortical area mt . The Journal of Neuroscience . 31 . 2. 373–384 . 10.1523/jneurosci.4738-10.2011 . 21228149. 6623455 . free .
2. Robinson D. . Petersen S. . 1985 . Responses of pulvinar neurons to real and self-induced stimulus movement . Brain Research . 338 . 2. 392–394 . 10.1016/0006-8993(85)90176-3. 4027606 . 7547426 .
3. Petersen S. . Robinson D. . Morris J. . 1987 . Contributions of the pulvinar to visual spatial attention . Neuropsychologia . 25 . 1. 97–105 . 10.1016/0028-3932(87)90046-7. 3574654 . 23143322 .
4. Chalupa, L. (1991). Visual function of the pulvinar. The Neural Basis of Visual Function. CRC Press, Boca Raton, Florida, pp. 140-159.
5. Arend I. . Rafal R. . Ward R. . 2008 . Spatial and temporal deficits are regionally dissociable in patients with pulvinar lesions . Brain . 131 . 8. 2140–2152 . 10.1093/brain/awn135 . 18669494. free .