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Opening the third eye

Abstract

Dark-adapted parietal-eye photoreceptors depolarize in response to light. A new study reveals that an unusual G-protein signaling pathway mediates this response.

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Figure 1: Photograph of a side-blotched lizard, showing the parietal (third) eye on the top of its head.
Figure 2: Summary of the key steps in three phototransduction cascades.

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Rieke, F. Opening the third eye. Nat Neurosci 1, 339–341 (1998). https://doi.org/10.1038/1644

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