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Strange vision: ganglion cells as circadian photoreceptors
Unusual vision: nerve cells in the eye that detect light for the body’s internal clock
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Abstract
A novel photoreceptor in the mammalian retina has been characterized, likely using melanopsin.
- These cells differ significantly from traditional rod and cone photoreceptors.
- They exhibit lower sensitivity and spatiotemporal resolution compared to rods and cones.
- These photoreceptors are likely specialized for encoding ambient light intensity.
- They are classified as ganglion cells, allowing direct communication with the brain.
- They may play a role in synchronizing circadian rhythms with the solar day.
- They also contribute to the pupillary light reflex and other responses to light.
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