[HN Gopher] Lawful kinematics link eye movements to the limits o...
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       Lawful kinematics link eye movements to the limits of high-speed
       perception
        
       Author : bookofjoe
       Score  : 17 points
       Date   : 2025-05-13 12:27 UTC (3 days ago)
        
 (HTM) web link (www.nature.com)
 (TXT) w3m dump (www.nature.com)
        
       | kurthr wrote:
       | I guess I'm looking for the target of this finding.
       | 
       | This might be interesting for foveated rendering techniques, and
       | certainly it's interesting to know how the eye responds to "real"
       | visual input, but it doesn't seem particularly relevant to
       | standard displays. These images were presented at 1400Hz updates.
       | That's necessary because saccades are 1000deg/sec events over 10s
       | of ms up to >100deg, while the high resolution fovea is only
       | ~1deg wide.
       | 
       | For standard raster scanned displays (CRT, LCD, OLED) upto 240Hz
       | there are other effects such as "tearing", "flicker", and
       | phosphor lag that are much more visible and distracting effects
       | for "rapidly moving" objects. That's even ignoring video
       | compression artifacts.
        
       | bzmrgonz wrote:
       | Someone in the know, or field, does this have anything to do with
       | the phenomenon of looking at the second hand on clocks and
       | feeling like the initial second is always longer??
        
         | ryankrage77 wrote:
         | That's caused by the way the brain 'edits out' motion that
         | occurs during saccade eye movements. If the second hand ticks
         | at the same time as your eyes are panning toward it, you won't
         | see the tick happening. Once the saccade finishes, it feels
         | like the second hand was in its final position that entire
         | time, even though it only just arrived there.
        
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