Neuronal organization of deep brain opsin photoreceptors in adult teleosts

Chong Yee Hang, Takashi Kitahashi, Ishwar S. Parhar

Research output: Contribution to journalReview ArticleOtherpeer-review

18 Citations (Scopus)


Biological impacts of light beyond vision, i.e., non-visual functions of light, signify the need to better understand light detection (or photoreception) systems in vertebrates. Photopigments, which comprise light-absorbing chromophores bound to a variety of G-protein coupled receptor opsins, are responsible for visual and non-visual photoreception. Non-visual opsin photopigments in the retina of mammals and extraretinal tissues of non-mammals play an important role in non-image-forming functions of light, e.g., biological rhythms and seasonal reproduction. This review highlights the role of opsin photoreceptors in the deep brain, which could involve conserved neurochemical systems that control different time- and light-dependent physiologies in in non-mammalian vertebrates including teleost fish.

Original languageEnglish
Article number48
Number of pages8
JournalFrontiers in Neuroanatomy
Publication statusPublished - 27 Apr 2016


  • Evolution
  • Extra-retinal
  • Light-sensitive
  • Neurochemical
  • Non-image-forming

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