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Frequency distributions of fixation durations of high-quality adult viewing data from two participants viewing the same stimuli on two eyetrackers. Viewing data have then been processed twice: first, using the manufacturer-supplied fixation detection algorithms, and second, using the new algorithms we present here. a Eyelink 1000, participant 1. b Eyelink 1000, participant 2. c Tobii TX300, participant 1. d Tobii TX300, participant 2
