In addition to the rainbow: scientists find unprecedented color to humans
Researchers from Berkelee and Washington Universities have demonstrated a new experimental system that extends the boundaries of human vision. Called OzCan prototype The photosensitive cones of the retina indulge in one by oneAllows scientists to display images Colors have never been realized before To humans.
Highlight of StudyPublished this month, the generation of new color “Olo”Described by volunteers a Very saturated blue. The color is produced by activating the option Known cones mA kind of light gentle cell usually divides the visual scene with L and S cones. In nature, any light that triggers M cones will also activate other types, limiting the range of colors that are perceived.
Can exceed this limit using the OZ system combination Optoretinography E. Optalmoscopy with adaptive light scanning (Oslo). First, scientists are classified by retina cones by type (L, M or S). Then the laser beam will scan and issue the retina 105 microbes light per secondWere definitely directed to specific cells.
The new color is clearly and consistently perceived when performing in exams, with five volunteers. To achieve a visual couple with known colors, participants had to dilute Olo with white lightIt proves that she is not in the call The gamut The natural of human vision.
In addition, the OZ system allowed to create visual stimulus Red lines -based and swivel points Olo is about color backgrounds. Volunteers were able to correctly identify these models only when laser micropolers were definitely dictated – small bugs abolished the perception of the new color.
The study also includes image and videos identification experiments, in which participants were able to separate the shapes and movements of the new color coding. When the system is deliberately reluctant, the images are not clear, and the natural color of the green laser used in awareness stimulus is limited.
A new example for color and image
Unlike traditional color display techniques, it combines lights from different wavelengths (as in RGB screens), OZ proposes a new concept: Space metamerism. Instead of combining the spectra, the system manipulates which cones are activated in space, creating unique perception from the single beam of monochrome light.
Researchers hope that this technology can open new opportunities in fields such as understanding how this technology will increase neuroscience, visual rehabilitation and brain color awareness. One of the most prestigious future experiments to use OZ to imitate the fourth type of cone presence in human retina – can do something theoretically, TetacromaticismA situation that extends the spectrum that humans appear.
Despite progress, the system is still limited to a small area of the retina and requires accurate eye stabilization. It is necessary to enhance or allow natural eye movements to expand or allow, to increase the ability to track the oakular, improve optical focus and extend the amount of data processed in real time.
However, for the first time, OZ refers to a technical leap by allowing the cell from the first neural layer connected to the cell cell. The perfect, researchers have been able to deceive the visual system and observe the brain a new color – it is not yet.
