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For the Reticulospinal tracts various terms are used in the literature. Following the study on human reticulospinal fibres by Nathan PW, Smith MC, Deacon P (1996 Vestibulospinal, reticulospinal and descending propriospinal nerve fibres in man. Brain 119:1809-1833), here, a simplified subdivision into a Lateral (from The Myelencephalon) and a Medial reticulospinal tract (from the Pons) is advocated.

For the Nucleus cuneatus (Cuneate nucleus), the new subdivision into 4 parts by Florence SL, Wall JT, Kaas JH (1989 Somatotopic organization of inputs from the hand to the spinal gray and cuneate nucleus of monkeys. J Comp Neurol 286:48-70) is used, as in Paxinos G, Huang X-F (1995 Atlas of the Human Brainstem. Academic Press, San Diego). The human cuneate nucleus contains discrete subregions with neurochemical features, matching those of the relay nuclei for nociceptive information, termed locus K (locus Karalis after the ancient name of Cagliari; Del Fiacco et al. 2014 Brain Struct Funct 219:2083-2101).

The Nucleus paramedianus posterior is also known as the Nucleus of the anterior funiculus, and possibly, is a precerebellar nucleus (Baizer JS, Baker JF, Haas K, Lima R 2007 Neurochemical organization of the nucleus paramedianus dorsalis in the human. Brain Res 1176:45-52; Olszewski and Baxter3, page 281).

It should be noted that the Inferior and Superior salivatory nuclei appear to be a distributed set of neurons that do not condense into nuclei as such (Blessing WB 2004 Lower brain stem regulation of visceral, cardiovascular, and respiratory function. In: Paxinos G, Mai JK, eds: The Human Nervous System, 2nd ed. Elsevier, Amsterdam. pp 465-478).

The Zona reticularis intermedia (Intermediate reticular zone of Paxinos et al. 1990) is the junctional zone between the alar and basal plates in the medulla oblongata and retropontine tegmentum. It contains the motoneurons of the ambiguus, retrofacial and facial nuclei, and the retroambiguus nucleus (Paxinos G, Huang X-F 1995 Atlas of the Human Brain Stem. Academic Press, CA). The IRZ around this motoneuron column includes the Bötzinger complex, the pre-Bötzinger complex and rostral and ventral respiratory and vasomotor groups (Blessing WW, Benarroch EE 2012 Lower brainstem regulation of visceral, cardiovascular, and respiratory function. In: Mai JK, Paxinos G, eds: The Human Central Nervous System, 3rd ed. Elsevier, Amsterdam, pp 1058-1073). Alternatively, certain nuclei have been grouped as Lateral reticular formation (Nieuwenhuys R, Voogd J, van Huijzen C 2008 The Human Central Nervous System, 4th ed. Springer, Heidelberg).

See note # 5224

(Tractus trigeminothalamici): The Tractus trigeminothalamicus anterior arises in the Spinal trigeminal nucleus and joins the Medial lemniscus, whereas the Tractus trigeminothalamicus lateralis arises in the Caudal part of the Spinal trigeminal nucleus and joins the Anterolateral tract.

See note # 8426