Lighting Research & Technology · 2012 · 72 citations · 44 references
MedicineNeuroscienceVision ScienceEye MovementsVisual NeuroscienceVisual PerceptionEye Movement AnalysisEye Movement PerceptionEye-movement ControlLuminance PerceptionSpatial Frequency ProcessingVisual SystemFlickerFlicker DiscriminationLight Flicker EffectsMotion Perception During SaccadesSaccade PerceptionSaccadic Eye Movement PhysiologyTemporal Frequency ResponseTemporal Modulation Processing
When driving at night, flickering automobile LED tail lights can appear as multiple images. The perception of a flickering source of light was therefore studied during rapid eye movements (saccades) of 20–40° amplitude in an otherwise dark room (<1 lux). The temporal modulation appeared as a spatial pattern known as a ‘phantom array’ during the saccade. The appearance of the pattern enabled the discrimination of flicker from steady light at frequencies that in 11 observers averaged 1.98 kHz. At a frequency of 120 Hz, the intrasaccadic pattern was perceptible when the contrast of the flicker exceeded 10%. It is possible that intrasaccadic stimulation interferes with ocular motor control.
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