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Its nice to work in a vision lab: you can do searches for things like 'best LCD monitor for gaming' and still claim to be working.

Two delays in LCD display chain
  1. Input lag - time lag between the video card sending a frame to the LCD and it actually getting displayed on the screen.
  2. Response time - time it takes for a pixel to flip on screen. Two figures are quoted BWB (Black White Black) and GTG (Grey to grey). BWB has a black and white definition - the time it takes for the pixel to go from 10% (Black) to 90% (White) ON [here]. GTG is more gray - basically manufacturers put in what they want.
Like in gaming, the response time is important in vision research, if you have a moving stimulus.

Unlike in gaming, input lag, as long as it is constant, is not a big problem - you just factor that into your latency data


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