Apparent Vibration of Vertical Lines

    loading  Checking for direct PDF access through Ovid


Displays of motionless vertical lines sometimes produce an impression of vibration. The relative strength of this impression was explored for 40 Ss, using a paired-comparison procedure, for displays of black lines subtending visual angles from 2 to 20′ of arc and having black to white area ratios of 1:1.5 and 1:3. The maximum impression of vibration was found for lines between 3′ and 10′ with 1:1.5 spacing.

    loading  Loading Related Articles