title: Light perception: more than meets the eyes.
abstract: Larval zebrafish lacking eyes and pineal organ show elevated activity levels and undirected light-seeking behaviour upon loss of illumination. This behaviour, termed dark photokinesis, is mediated by hypothalamic deep brain photoreceptors expressing melanopsin.
authors.affiliation: University of Zurich, Institute of Molecular Life Sciences, Neuroscience Center Zurich and Center for Integrative Human Physiology, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland. kaspar.mueller@imls.uzh.ch
authors.forename: Kaspar P
authors.initials: KP
authors.lastname: Mueller
authors.forename: Stephan C F
authors.initials: SC
authors.lastname: Neuhauss
mesh_terms: D000818:Animals; D001921:Brain / Q000502:physiology*; D010775:Photic Stimulation; D020419:Photoreceptor Cells, Vertebrate / Q000502:physiology*; D014796:Visual Perception; D015027:Zebrafish / Q000502:physiology*