Color is created by utilizing two properties of light, energy and frequency of vibration or wavelength. How our brain separates these two properties of light, energy and wavelength, and then recombines them into color perception is a mystery that has intrigued scientists through the ages. We know much about the nature of light and the subjective impressions of color, definable by physícal standards (Wright, 1946) but ultimately color should be explained at the level of single cells in our brain. Examination of the responses of single neurons or arrays of such neurons provides the best insights into the physiology of color vision. Ultimately our understandíng of this process wíll allow us to model the neural circuits that underlie the perception of color and form. Although stíll beyond reach, progress is being made in deciphering these clever circuits that create our perception of the external world.
We start by describing the nature of the photoreceptors that convert light energy into neural signals. Then we consider the parallel channels leading from the retina to the thalamus carrying information into visual cortex, where color is ultimately determined. Lastly we use our current understandíng to speculate on how visual cortex uses neural circuits to create the perception of color and form.
Read the full article at: http://webvision.med.utah.edu/Color.html
We start by describing the nature of the photoreceptors that convert light energy into neural signals. Then we consider the parallel channels leading from the retina to the thalamus carrying information into visual cortex, where color is ultimately determined. Lastly we use our current understandíng to speculate on how visual cortex uses neural circuits to create the perception of color and form.
Read the full article at: http://webvision.med.utah.edu/Color.html
