Cortical processing of vowels and tones as measured by event-related desynchronization
作者： Christina M. Krause , Heikki Lang , Matti Laine , Mika Kuusisto , Bodil P�rn
DOI: 10.1007/BF01187669
关键词:
摘要: Event-Related Desynchronization (ERD) and Synchronization (ERS) were studied in 20 normal subjects during a Sternberg-type auditory memory-scanning paradigm. Half of the performed experiment with vowels other half tones as stimuli. The stimuli consisted 100 msec long synthesized produced by eight different instruments. In this paradigm each trial started presentation visual warning signal, after which four-stimulus set was presented for memorization whereafter probe stimulus identified subject belonging or not to memorized set. ERD/ERS lower (8–10 Hz) upper (10–12 alpha frequency bands differed their reactivity type; differences between two reached statistical significance only case vowels. memory elicited ERS more pronounced 10–12 Hz band greater than tones. On hand, ERD tones, especially band. results exploratory study suggest that is closely related processes ERD/ERS-technique might provide valuable tool future reseach encompassing complex stimulation like speech music.
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