SEMANTIC ASSOCIATION OF ECOLOGICALLY UNRELATED SYNCHRONOUS AUDIO-VISUAL INFORMATION IN COGNITIVE INTEGRATION: AN EVENT-RELATED POTENTIAL STUDY
In: Neuroscience, Jg. 192 (2011), S. 494-499
academicJournal
- print, 3/4 p
Zugriff:
In this paper, we aimed to study the semantic association of ecologically unrelated synchronous audio-visual information in cognitive integration. A moving particle, which speed varied, was taken as a visual stimulus, while a simple tone, which frequency varied, was used as an auditory stimulus, both were synchronously presented to subjects in the form of a video. Behavioral results confirmed our hypothesis that the moving particle with varied speed and the simple tone with varied frequency were highly associated. Event-related potential (ERP) results showed that an N400 effect and a late posterior negativity (LPN) were elicited under the Incongruent condition as compared to the Congruent condition. It was further determined that there was semantic association between ecologically unrelated synchronous audiovisual information in cognitive integration. We considered that the N400 effect in our results reflected the process that stimulus-driven activities are bound together through a temporal semantic network (TSN) to form multimodal representations, while the state of this temporal semantic network was determined by both long-term learned association among stimuli and short-term experience of incoming information. The LPN might reflect the process that the human brain searches and retrieves context-specifying information in order to make a judgment, and the context-specifying information might have originated from the long-term learned association stored in the brain.
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SEMANTIC ASSOCIATION OF ECOLOGICALLY UNRELATED SYNCHRONOUS AUDIO-VISUAL INFORMATION IN COGNITIVE INTEGRATION: AN EVENT-RELATED POTENTIAL STUDY
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Autor/in / Beteiligte Person: | LIU, B ; WU, G ; WANG, Z ; MENG, X ; WANG, Q |
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Zeitschrift: | Neuroscience, Jg. 192 (2011), S. 494-499 |
Veröffentlichung: | Amsterdam: Elsevier, 2011 |
Medientyp: | academicJournal |
Umfang: | print, 3/4 p |
ISSN: | 0306-4522 (print) |
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