English: FIGURE 1. SCHEMATIC REPRESENTATION OF INPUTS AND OUTPUTS OF OREXIN NEURONS. Orexin neurons are found only in the lateral hypothalamic area but project throughout the entire central nervous system. Red arrows show excitatory projections, while blue lines show inhibitory projections. Abbreviations: Arc, arcuate nucleus; DR, dorsal raphe nucleus; LC, locus coeruleus; LDT, laterodorsal tegmental nucleus; PPT, pedunculopontine tegmental nucleus; TMN, tuberomammillary nucleus; VTA, ventral tegmental area; VLPO, ventrolateral preoptic nucleus. (Obtained from https://doi.org/10.3389/fendo.2013.00018)
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