This is the conclusion of an investigation carried out by scientists University of Freiburg in Germany, they discovered why people with depression commonly seen everything "darker."
In previous studies, researchers found that people with depression have difficulty detecting the differences in the contrasts of black and white.
In the current study measured the response of the retina of several people, both with and without depression, treated to analysis using electrocardiograms neuropsychiatry and ophthalmology in the retina of the eye.
The retina at the back of the eye, containing sensitive cells that convert light into nerve impulses that the brain interprets to let us see.
Scientists found that patients with depression, some antidepressants undergoing treatments and some not, had a capacity much lower contrast in the retina than those not suffering from the disorder.
This effect, the authors explain, is similar to watching television by lowering levels of contrast.
diagnostic Form Researchers also found an association between the ability to detect the contrast and the severity of depression.
other words, patients with more severe symptoms of depression were those who showed less responsiveness in the retina.
As the researchers note in the journal Biological Psychiatry, the study could lead to create a way of assessing the severity of depression by measuring the contrast of the retina.
"These data show the depth of how depression alters the experience of an individual's world," says Dr. John Krystal, editor of the publication.
"When people are depressed, are less able to perceive contrasts in the visual world, "he adds.
" This loss seems to make the world a less pleasant place to live. "
For his part, Dr. Tebartz Ludger van Elst, who led the study, says that this form of measurement of the retina could become "a valuable tool for objectively measuring the subjective state of depression."
"This could have far-reaching implications for both research and for clinical diagnosis and therapy of depression."
But the scientist says that while these results are clear, will need to be confirmed in future studies.
http://www.diariosalud.net/content/view/20267/413/
In previous studies, researchers found that people with depression have difficulty detecting the differences in the contrasts of black and white.
In the current study measured the response of the retina of several people, both with and without depression, treated to analysis using electrocardiograms neuropsychiatry and ophthalmology in the retina of the eye.
The retina at the back of the eye, containing sensitive cells that convert light into nerve impulses that the brain interprets to let us see.
Scientists found that patients with depression, some antidepressants undergoing treatments and some not, had a capacity much lower contrast in the retina than those not suffering from the disorder.
This effect, the authors explain, is similar to watching television by lowering levels of contrast.
diagnostic Form Researchers also found an association between the ability to detect the contrast and the severity of depression.
other words, patients with more severe symptoms of depression were those who showed less responsiveness in the retina.
As the researchers note in the journal Biological Psychiatry, the study could lead to create a way of assessing the severity of depression by measuring the contrast of the retina.
"These data show the depth of how depression alters the experience of an individual's world," says Dr. John Krystal, editor of the publication.
"When people are depressed, are less able to perceive contrasts in the visual world, "he adds.
" This loss seems to make the world a less pleasant place to live. "
For his part, Dr. Tebartz Ludger van Elst, who led the study, says that this form of measurement of the retina could become "a valuable tool for objectively measuring the subjective state of depression."
"This could have far-reaching implications for both research and for clinical diagnosis and therapy of depression."
But the scientist says that while these results are clear, will need to be confirmed in future studies.
http://www.diariosalud.net/content/view/20267/413/
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