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Gaze-direction-based MEG averaging during audiovisual speech perception
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نویسنده
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hirvenkari l. ,jousmäki v. ,lamminmäki s. ,saarinen v.-m. ,sams m.e. ,hari r.
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منبع
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frontiers in human neuroscience - 2010 - دوره : 4 - شماره : MAR
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چکیده
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To take a step towards real-life-like experimental setups,we simultaneously recorded magnetoencephalographic (meg) signals and subject's gaze direction during audiovisual speech perception. the stimuli were utterances of /apa/ dubbed onto two side-by-side female faces articulating /apa/ (congruent) and /aka/ (incongruent) in synchrony,repeated once every 3 s. subjects (n = 10) were free to decide which face they viewed,and responses were averaged to two categories according to the gaze direction. the right-hemisphere 100-ms response to the onset of the second vowel (n100m') was a fi fth smaller to incongruent than congruent stimuli. the results demonstrate the feasibility of realistic viewing conditions with gaze-based averaging of meg signals. © 2010 hirvenkari,jousmäki,lamminmäki,saarinen,sams and hari.
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کلیدواژه
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Auditory cortex; Eye tracking; Human; Magnetoencephalography; McGurk illusion
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آدرس
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brain research unit,low temperature laboratory,aalto university school of science and technology,espoo, Finland, brain research unit,low temperature laboratory,aalto university school of science and technology,espoo, Finland, brain research unit,low temperature laboratory,aalto university school of science and technology,espoo, Finland, brain research unit,low temperature laboratory,aalto university school of science and technology,espoo, Finland, department of biomedical engineering and computational science,aalto university school of science and technology,espoo, Finland, brain research unit,low temperature laboratory,aalto university school of science and technology,espoo,finland,department of clinical neurophysiology,helsinki university central hospital,helsinki, Finland
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Authors
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