Iconic gestures prime related concepts: An ERP study |
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Authors: | Ying Choon Wu Seana Coulson |
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Institution: | Cognitive Science Department, University of California, San Diego, La Jolla, California 92093-0515, USA. ywu@cogsci.ucsd.edu |
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Abstract: | To assess priming by iconic gestures, we recorded EEG (at 29 scalp sites) in two experiments while adults watched short, soundless
videos of spontaneously produced, cospeech iconic gestures followed by related or unrelated probe words. In Experiment 1,
participants classified the relatedness between gestures and words. In Experiment 2, they attended to stimuli, and performed
an incidental recognition memory test on words presented during the EEG recording session. Event-related potentials (ERPs)
time-locked to the onset of probe words were measured, along with response latencies and word recognition rates. Although
word relatedness did not affect reaction times or recognition rates, contextually related probe words elicited less-negative
ERPs than did unrelated ones between 300 and 500 msec after stimulus onset (N400) in both experiments. These findings demonstrate
sensitivity to semantic relations between iconic gestures and words in brain activity engendered during word comprehension. |
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