Fig. 1

Light-sensitive brain pathways. Simplified brain networks (not exhaustive representation) of the classical visual system and the non-image-forming system. Abbreviations: PFC prefrontal cortex, SCN suprachiasmatic nucleus, SPVZ subparaventricular zone, VLPO ventrolateral preoptic nucleus, PVN paraventricular nucleus of the hypothalamus, LH lateral hypothalamus, DMH dorsomedial nucleus of the hypothalamus, LGN lateral geniculate nucleus, IGL intergeniculate leaflet, EWN Edinger-Westphal nucleus, OPN olivary pretectal nucleus, SC superior colliculus, V1 primary visual area, LC locus coeruleus, VTA ventral tegmental area, ipRGC intrinsically photosensitive retinal ganglion cell, RHT retino-hypothalamic tract. Eye illustration components modified from: http://2012books.lardbucket.org/books/beginning-psychology/s08-02-seeing.html —reproduction/modifications in accordance with: http://creativecommons.org/licenses/by-nc-sa/3.0/ Brain template: reproduced with permission from McGraw-Hill Education Material (source: Saladin, Kenneth S., Human Anatomy, Edition: 2, ISBN: 9780072943689, Figure 15.2-b, p. 425)