NROC34H3 Lecture : NROC34: Lec 5: Vision in Honeybees
Document Summary
Slide 3: vision is complex along several dimensions: visual stimuli , spatial patterns of light intensity, vary in wavelength/intensity = color differences, if change over time = motion. Slide 4: spatial pattern: displays spatial intensity distribution. Slide 5: color: can have the same spatial pattern of intensity variation but another type of variation could be intensity at diff wavelength (color, these are all the same spatial patterns but in diff colors. Slide 6: motion: same spatial intensity pattern, slide across screen the speed and direction of movement will cause the pattern to vary in the way it stimulates the retina over time. Insects and crustaceans have compound eyes but not true of all invertebrates. There are invertebrates, such as cephalopods (squid family), which have image-forming eyes which are remarkably similar to vertebrate eye structure: arachnids = simple eyes b/c have single lens (as opposed to having compound eyes) Slide 8: cephalod eye: similar to vertebrate eye.
