Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A nerve ending, cell, or group of cells specialized to sense or receive light.
  • noun An electronic device that converts light energy into electrical signals.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun biology A specialized neuron able to detect, and react to light

Etymologies

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Examples

  • A photoreceptor is a nerve cell found in the eye's retina that is capable of phototransduction, or the process by which light is converted into electrical signals.

    Health News from Medical News Today 2009

  • A photoreceptor is a nerve cell found in the eye's retina that is capable of phototransduction, or the process by which light is converted into electrical signals.

    Kansas City infoZine Headlines 2009

  • A photoreceptor is a nerve cell found in the eye's retina that is capable of phototransduction, or the process by which light is converted into electrical signals.

    THE MEDICAL NEWS 2009

  • "The downstream retinal neurons that receive and process information from photoreceptor cells are preserved for years after the onset of blindness," says Dr. Collins, "giving hope that visual sensitivity might be restored by allowing the artificial input of information to these surviving cells."

    And Tomorrow's Winners Will Be... Chris Gay 2010

  • Their technique involves introducing light-sensing molecules, or "photoswitches," into retinas that have lost photoreceptor cells.

    And Tomorrow's Winners Will Be... Chris Gay 2010

  • This image of a chick 's retina reveals the neurons that perform this function with, at the top, its photoreceptor cells in gray.

    Portraits of the Mind 2010

  • I. Evidence for the existence of a unique photoreceptor in skin and its role in photoimmunology.

    Potential impacts of direct mechanisms of climate change on human health in the Arctic 2009

  • Researchers have discovered an important element for making night vision possible in nocturnal mammals: the DNA within the photoreceptor rod cells responsible for low light vision is packaged in a very unconventional way, according to a report in the April 17th issue of Cell.

    Secret To Night Vision Found In DNA’s Unconventional ‘Architecture’ | Impact Lab 2009

  • There are two slight changes in the canine retinae: in the distribution of photoreceptor cells and in the speed with which they operate.

    INSIDE OF A DOG ALEXANDRA HOROWITZ 2009

  • In addition to providing a weighting function to determine biologically-effective doses, action spectra are useful for helping to identify the initial light-absorbing photoreceptor responsible for triggering a light-driven biological response [83].

    Potential impacts of direct mechanisms of climate change on human health in the Arctic 2009

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