Machine summary:
This sense became more intense in her after Roza suffered an anaphylactic romantic attack, to the point where she was able to "see" colors with her fingers.
The hypothesis of light sensitivity was tested at the Institute of Biophysics, and after conducting a complete series of tests, we were faced with the unbelievable fact that the skin of Roza's fingers possesses real light receptors, namely visual organs.
Nevertheless, Roza was able to distinguish bright and dark spots with her fingers on the glass surface.
Only one conclusion can be drawn from this experiment, and that is that Roza's fingertips react to normal light just like our eyes.
With the help of a special drawing— lines that include dots placed at different intervals—it was established that in every square millimeter of Roza's fingertips, there are about ten light sensory elements!
The result obtained regarding Roza was that her fingers have three types of light receptors—for red, blue, and green—whose spectral sensitivity graph matches exactly with the cone-shaped part of the human eye.
With every experiment conducted, the similarity between the sensitivity of Roza's fingers to light and our visual organs became more certain than ever before.
This phenomenon helps scientists understand how the perception of light and color evolved and realize what their original and primary forms were, and how the specialized organ for vision, the eye, develops.
" He placed the yellow and red sheets in front of the subject and asked him to identify the colors.