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Diaplopia
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Diaplopia Double vision.
RELATED TERMS--------------------------------------
Vision
The sense of sight.
SIMILAR TERMS--------------------------------------
Diaper rash
Also called "diaper dermatitis," a diaper rash is a skin inflammatory reaction localized to the area usually covered by the diaper. It can have many causes including infections (yeast, bacterial or viral), friction irritation, chemical allergies (perfumes, soaps), sweat and plugging of sweat glands.
Diaper rash, yeast
Infection in the diaper area caused by a yeast formerly called Monilia and now called Candida. These organisms are part of the germs normally found in various parts of the body and ordinarily do not cause any symptoms.
Diaphoresis
Excessive sweating.
Diaphragm
The muscle wall between the chest and the abdomen. It is the major muscle that the body uses for breathing.
Diaphragm (contraceptive)
A barrier method of contraception that is available by prescription only and must be sized by a health professional to achieve a proper fit.
Diaphragm (muscle)
The muscle that separates the chest (thoracic) cavity from the abdomen. The diaphragm is the main muscle of respiration. Contraction of the diaphragm muscle expands the lungs during inspiration when one is breathing air in. We rely heavily on the diaphragm for our respiratory function so that when the diaphragm is impaired, it can compromise our breathing. The nerve that controls the diaphragm is the phrenic nerve, which originates much high (at C3-C5). During development the diaphragm moves down and drags the phrenic nerve with it.
Diaphragm pacing
A procedure to help patients with spinal cord injuries to breathe. Their breathing is helped by setting the respiratory rate by electrical stimulation (pacing) of the phrenic nerve. The pacing is accomplished via electrodes surgically implanted into the diaphragm, which is innervated by the phrenic nerve.
Diaphragmatic hernia
A hole in the diaphragm that allows abdominal contents to push into thechest cavity. In severe instances, a baby's stomach and part of the large intestines will displace the heart and lungs, requiring emergency surgery.
Diaphyseal aclasis
A syndrome in which there are multiple enchondromata.
Diapid
Diapid 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): lypressin.
PREVIOUS AND NEXT TERMS--------------------------------------
Dmax
The largest displacement between successive presentations for which observers still obtain a coherent sense of motion. For larger steps the displaced object seems to disappear and then reappear at a different location. Increases with retinal eccentricity and is a function of the spatial frequencies in the image. Note that apparent motion can occur at distance much larger than Dmax.
Dark light
Rods spontaneously produce a signal that is indistinguishable from a photon elicited event even in complete darkness about once every 160 msec.
Degree of convergence
The angle of inclination of the two eyes used in depth perception
Delayed match-to-sample
Subject is shown a stimulus and then after a delay is required to choose the same stimulus from a number of stimuli to obtain reward.
Depth capture
Objects in an image with no apparent depth information can be captured by surrounding surfaces which do contain depth information.
Diaplopia
Dichoptic stimulation
When different images are presented to each eye.
Dichromatic color vision
Color vision based on two cone photoreceptor pigments in the retina.
Diffraction
The scattering of rays of light by collision with particles of matter as they pass through a medium such as air or water, or pass by a edge or narrow aperture. Plays a role when the pupil is small.
Direction selectivity
A difference in the response of a cell to a pattern of light moving through it receptive field according to the direction of movement. Cells respond well when a stimulus moves in one direction and not in the opposite direction.
Discounting the illuminant
Illumination of the visual world tens to be non-uniform, and fluctuates. in order for the visual system to create a consistent perception of color and lightness it must somehow discount fluctuation and gradient in the lighting source.
RELATED TERMS--------------------------------------
Vision
The sense of sight.
SIMILAR TERMS--------------------------------------
Diaper rash
Also called "diaper dermatitis," a diaper rash is a skin inflammatory reaction localized to the area usually covered by the diaper. It can have many causes including infections (yeast, bacterial or viral), friction irritation, chemical allergies (perfumes, soaps), sweat and plugging of sweat glands.
Diaper rash, yeast
Infection in the diaper area caused by a yeast formerly called Monilia and now called Candida. These organisms are part of the germs normally found in various parts of the body and ordinarily do not cause any symptoms.
Diaphoresis
Excessive sweating.
Diaphragm
The muscle wall between the chest and the abdomen. It is the major muscle that the body uses for breathing.
Diaphragm (contraceptive)
A barrier method of contraception that is available by prescription only and must be sized by a health professional to achieve a proper fit.
Diaphragm (muscle)
The muscle that separates the chest (thoracic) cavity from the abdomen. The diaphragm is the main muscle of respiration. Contraction of the diaphragm muscle expands the lungs during inspiration when one is breathing air in. We rely heavily on the diaphragm for our respiratory function so that when the diaphragm is impaired, it can compromise our breathing. The nerve that controls the diaphragm is the phrenic nerve, which originates much high (at C3-C5). During development the diaphragm moves down and drags the phrenic nerve with it.
Diaphragm pacing
A procedure to help patients with spinal cord injuries to breathe. Their breathing is helped by setting the respiratory rate by electrical stimulation (pacing) of the phrenic nerve. The pacing is accomplished via electrodes surgically implanted into the diaphragm, which is innervated by the phrenic nerve.
Diaphragmatic hernia
A hole in the diaphragm that allows abdominal contents to push into thechest cavity. In severe instances, a baby's stomach and part of the large intestines will displace the heart and lungs, requiring emergency surgery.
Diaphyseal aclasis
A syndrome in which there are multiple enchondromata.
Diapid
Diapid 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): lypressin.
PREVIOUS AND NEXT TERMS--------------------------------------
Dmax
The largest displacement between successive presentations for which observers still obtain a coherent sense of motion. For larger steps the displaced object seems to disappear and then reappear at a different location. Increases with retinal eccentricity and is a function of the spatial frequencies in the image. Note that apparent motion can occur at distance much larger than Dmax.
Dark light
Rods spontaneously produce a signal that is indistinguishable from a photon elicited event even in complete darkness about once every 160 msec.
Degree of convergence
The angle of inclination of the two eyes used in depth perception
Delayed match-to-sample
Subject is shown a stimulus and then after a delay is required to choose the same stimulus from a number of stimuli to obtain reward.
Depth capture
Objects in an image with no apparent depth information can be captured by surrounding surfaces which do contain depth information.
Diaplopia
Dichoptic stimulation
When different images are presented to each eye.
Dichromatic color vision
Color vision based on two cone photoreceptor pigments in the retina.
Diffraction
The scattering of rays of light by collision with particles of matter as they pass through a medium such as air or water, or pass by a edge or narrow aperture. Plays a role when the pupil is small.
Direction selectivity
A difference in the response of a cell to a pattern of light moving through it receptive field according to the direction of movement. Cells respond well when a stimulus moves in one direction and not in the opposite direction.
Discounting the illuminant
Illumination of the visual world tens to be non-uniform, and fluctuates. in order for the visual system to create a consistent perception of color and lightness it must somehow discount fluctuation and gradient in the lighting source.
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This dictionary contains 19186 terms.
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