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Retention and disruption of motion information in visual short-term memor

Magnussen, Svein ; Greenlee, Mark W.


Velocity discrimination thresholds for drifting luminance gratings were measured as a function of the time interval between test and reference gratings, using a 2-interval, forced-choice procedure. Discrimination thresholds, expressed as Weber fractions (ΔV/V), were independent of interstimulus interval (ISIs) ranging from 1 to 30 sec, demonstrating perfect short-term retention of velocity ...


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