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Modal
Modal Perceptually salient, having a real phenomenological presence. As opposed to Amodal.
RELATED TERMS--------------------------------------
Amodal
Perceptually present, but not having a real phenomenological presence. (As opposed to Modal).
SIMILAR TERMS--------------------------------------
Modafinil
Modafinil is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): modafinil.
Modares
The Modares is a hospital in Tehran, Iran.
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Melanin
Black pigment in the pigment epithelium cells that absorbs light not captured by the retina preventing it from being reflected off the back of the eye.
Membranous discs
Located in outer segments of photoreceptors.
Mesopic
Intensities of light under which both rods and cones operate. See also Photopic and Scotopic
Metameric stimuli
Two stimuli which despite their physical differences are perceptually indistinguishable.
Microspectrophotometry (MSP)
A procedure that involves the passage of a narrow measuring beam through the outer segments of individual photoreceptors to measure absorbance spectra in excised retinas.
Modal
Modulation transfer function
A plot of the ratio of image contrast to target contrast at different spacial frequencies.
Mondrian stimulus
Consists of a Mosaic of rectangular shapes of (usually) black, grey and white.
Monochromat
An individual with only one spectral channel (i.e. retina receptors have the same spectral sensitivity).
Monocular depth cues
Relative size, texture gradients, perspective, shadow, height of retina image, interposition, motion parallax.
Monocular zone
The areas of the visual field from which light projects only to one of the eyes. See also Binocular Zone.
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