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|Brain: Nucleus raphe pallidus|
|Section of the medulla oblongata at about the middle of the olive. (Raphe nuclei not labeled, but 'raphe' labeled at left.)|
|Latin||nucleus raphes pallidus|
The nucleus raphe pallidus receives afferent connections from the periaqueductal gray, the paraventricular hypothalamic nucleus, central nucleus of the amygdala, lateral hypothalamic area, and parvocellular reticular nucleus.
The pallidus has recently been shown to be involved in the activation of a fever as an immunoreaction. It has been implied that the preoptic area is constantly inhibiting the raphe pallidus, especially the rostral portion, with GABA.
In both of these cases, GABA is mediating two different sympathetic responses, so clearly the nucleus raphe pallidus is a far more a complex nucleus than previously thought.
See also[edit | edit source]
References[edit | edit source]
- Hermann, Dirk M. et al. Afferent projections to the rat nuclei raphe magnus, raphe pallidus and reticularis gigantocellularis pars demonstrated by iontophoretic application of choleratoxin (subunit b). Journal of Chemical Neuroanatomy Volume 13, Issue 1 , June 1997, Pages 1-21
- Nakamura, Kazuhiro et al. The Rostral Raphe Pallidus Nucleus Mediates Pyrogenic Transmission from the Preoptic Area. The Journal of Neuroscience, June 1, 2002, 22(11):4600-4610
- Zaretsky, Dmitry V. et al. Microinjection of muscimol into raphe pallidus suppresses tachycardia associated with air stress in conscious rats. Journal of Physiology (2003), 546.1, pp. 243-250
Brain: rhombencephalon (hindbrain)
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