Lecture_13A - Headband-mounted Eyetracking Eye Movements...

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• Headband-mounted Eyetracking • Probabilistic Language Processing in a Visuospatial Context • Eye Movements During: Time Scale • Spoken Word Recognition .1 s • Syntactic Processing 1.0 s • Categorical Speech Perception .01 s
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Headband-mounted Eyetracking Why study eye movements? • Eye movements are fast. • Eye movements are ballistic. • Eye movements are sensitive to probabilistic information. • Eye movements are automatic.
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cables lead to eyetracking module and VCR Eye Camera (uses infrared) Silvered Visor (reflects infrared) Scene Camera Headband-mounted Eyetracking
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02:21:15 Headband-mounted Eyetracking
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Headband-mounted Eyetracking
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• Headband-mounted Eyetracking • Probabilistic Language Processing in a Visuospatial Context • Eye Movements During: Time Scale • Spoken Word Recognition .1 s • Syntactic Processing 1.0 s • Categorical Speech Perception .01 s
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Categorical Speech Perception 1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 0 5 10 15 20 25 30 35 40 Proportion of /pa/ Response Voice Onset Time (ms) /ba/ /pa/
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/ba/ /pa/ (McMurray, Tanenhaus, Aslin, & Spivey, 2003)
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Categorical Speech Perception 1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 0 5 10 15 20 25 30 35 40 Proportion of /pa/ Response Voice Onset Time (ms) (McMurray, Tanenhaus, Aslin, & Spivey, 2003)
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1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 0 200 400 600 800 1000 1200 1400 1600 Proportion of Fixations Milliseconds after stimulus onset VOT 0 ms /pa/ icon /ba/ icon (McMurray & Spivey, 1999)
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1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 0 200 400 600 800 1000 1200 1400 1600 Proportion of Fixations Milliseconds after stimulus onset VOT 20 ms /pa/ icon /ba/ icon (McMurray & Spivey, 1999)
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1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 0 200 400 600 800 1000 1200 1400 1600 Proportion of Fixations Milliseconds after stimulus onset VOT 40 ms /pa/ icon /ba/ icon (McMurray & Spivey, 1999)
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1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 0 5 10 15 20 25 30 35 40 Proportion of /pa/ Gaze Duration Voice Onset Time (ms) “Categorical” Speech Perception (McMurray, Tanenhaus, Aslin, & Spivey, 2003) 1201-1500ms
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1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 0 5 10 15 20 25 30 35 40 Proportion of /pa/ Gaze Duration Voice Onset Time (ms) 0-300ms 301-600ms 601-900ms 901-1200ms 1201-1500ms “Categorical” Speech Perception (McMurray, Tanenhaus, Aslin, & Spivey, 2003)
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1.0 .9 .8 .7 .6 .5 .4 .3 .2 .1 0 0 5 10 15 20 25 30 35 40 Proportion of /pa/ Activation Voice Onset Time (ms) “Categorical” Speech Perception
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1.0
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Lecture_13A - Headband-mounted Eyetracking Eye Movements...

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