منابع مشابه
Binocular Vision: The Eyes Add and Subtract
Our two eyes' views of the outside world are slightly different, providing the basis for stereopsis. A new study has found evidence that the human visual system has separately adaptable channels for adding and subtracting the neural signals from the two eyes, supporting an unconventional view of the initial stages of stereopsis.
متن کاملVision: a collaboration of eyes and brain.
We walk down a street, step up and down curbs, maneuver around objects and other pedestrians and adjust our pace, while visually monitoring our position. Moments later we get into our car, drive at highway speed through traffic and judge where we are relative to other vehicles while anticipating the flow of traffic. We arrive at baseball practice where we pick up a bat, walk to the plate, miss ...
متن کاملWarm Eyes Provide Superior Vision in Swordfishes
Large and powerful ocean predators such as swordfishes, some tunas, and several shark species are unique among fishes in that they are capable of maintaining elevated body temperatures (endothermy) when hunting for prey in deep and cold water . In these animals, warming the central nervous system and the eyes is the one common feature of this energetically costly adaptation . In the swordfish (...
متن کاملBinocular Vision: Joining Up the Eyes
To provide a unitary view of the external world, signals from the two eyes must be combined: a new study pinpoints the location in the human brain where the requisite combination occurs.
متن کاملColour Vision: Dalton's eyes and monkey genes
Recent molecular genetic studies show how changes in the protein component of a visual pigment alters its absorbance; they also explain the abnormal colour vision of one of the great pioneers of visual science.
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ژورنال
عنوان ژورنال: Naturwissenschaften
سال: 1995
ISSN: 0028-1042,1432-1904
DOI: 10.1007/s001140050213