 |
 |
Facilitator QuestionsQ: In the lecture, examples were shown of human eye movements during reading or while viewing faces. How are such eye movements measured? Q: As Newton observed when passing light through a glass prism, differently colored lights are bent to different extents. The same phenomenon occurs when light is focused by refraction by the cornea and lens. This phenomenon, referred to as chromatic aberration, produces an image on the retina which will be optimally focused for one particular wavelength of light and progressively out of focus for wavelengths that are progressively further from the one for which the focus is optimal. How has the problem of chromatic aberration been solved for optical instruments such as telescopes and microscopes? Q: The center-surround receptive field organization of retinal ganglion cells serves as a way of comparing light intensity at different locations on the retina. Why has the retina evolved to have this organization? Is this general principle used in other contexts within the visual system or in other sensory systems? |
