Psychophysical isolation of movement sensitivity by removal of familiar position cues

  title={Psychophysical isolation of movement sensitivity by removal of familiar position cues},
  author={Ken Nakayama and Christopher W. Tyler},
  journal={Vision Research},
To isolate differential motion sensitivity from the contaminating effects of position sensitivity, we used a field of random dots undergoing a differential shearing motion. Movement threshold amplitude vs temporal frequency showed ‘L slope of 1 on double-logarithmic coordinates, confirming that the detection was based on motion rather than on positional information. A comparison of motion and position sensitivity showed both to be very high, each requiring a differential displacement of only 5… CONTINUE READING

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