sticklen@cpswh.cps.msu.edu (Jon Sticklen) (12/13/89)
i have another vision type question to ask the biologists on the net. which organisms on the evolutionary totem pole exhibit sacatic (sp?) motion of their eyes. yes - i know i am probably misspelling that word. what i mean is the rapid side-to-side motion of the eyes that i know humans do. it has always puzzled me whether or not this phenomenon is generally applicable to the animal kingdom. thanks, ------------------------------------------------------------- Jon Sticklen Artificial Intelligence/Knowledge Based Systems Group Computer Science Department Michigan State University East Lansing, MI 48824-1027 517-353-3711 FAX: 517-336-1061 -------------------------------------------------------------
honig@ics.uci.edu (David A. Honig) (12/16/89)
In article <5772@cps3xx.UUCP> sticklen@cpswh.cps.msu.edu (Jon Sticklen) writes: > >i have another vision type question to ask the biologists on the net. >which organisms on the evolutionary totem pole exhibit sacatic (sp?) >motion of their eyes. yes - i know i am probably misspelling that word. >what i mean is the rapid side-to-side motion of the eyes that i know >humans do. it has always puzzled me whether or not this phenomenon is >generally applicable to the animal kingdom. > >thanks, Animal kingdom is too broad a term ---ranging from insects to humans. Some mammals (eg, cats) make saccidic eye movements. The general *principle* of orienting a sensor with *varying* resolution (such as the human eye, or any eye with a fovea, or even an ear with movable pinnae) is universal, whether its the eyeball that moves or the whole head (as with owls). You might check: "the gaze as a flying spot sensor" sec 5.9 in The Illusion of Reality by H.L.Resnikoff It has to do with the advantages of hierarchical organization of info-processing system. -- David A. Honig ... Paternalism is a first step towards totalitarian statism.