Spatial interaction in human cone vision

摘要: 1. The adaptation state of a uniformly illuminated patch human cone retina was determined by finding the threshold for small, brief light spot seen flashing in its centre. 2. When is increased diameter, first raised, and beyond critical background lowered. 3. This interpreted as manifestation excitatory inhibitory interaction stimuli: illumination retinal regions immediate neighbourhood area tested acts to raise level, those further removed lower it. 4. which adapting produces inhibition about 5 min arc diameter eye's object space foveal observation. For peripheral vision it increases much minimum angle resolution. 5. inhibiting action outlying areas substantially reduced, or perhaps even eliminated, lowering luminance. 6. Surrounding with pair juxtaposed narrow concentric black white rings superimposed on uniform field, simulating border, irrespective does not influence probing spot. argues against possible raising effect border background. 7. surrounding annulus occurs only when same eye other eye: site is, therefore, retinal.