Pretrial EEG Coherence as a Predictor of Semantic Priming Effects.  

Oleh:

Sheppard II, William D. ; Boyer, Robert W.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 39 no. 1 (Jul. 1990), page 57-68.
Fulltext: 39_01_Sheppard_Boyer.pdf (751.42KB)

Ketersediaan

Perpustakaan PKBB Nomor Panggil: 405/BAL/39 Non-tandon: tidak ada Tandon: 1

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Isi artikel

Twenty subjects were presented 240 randomized trials of a lexical decision task (LDT) while connected to a l6-electrode EEG montage. EEG data were acquired for 2 sec prior to the onset of each LDT trial. Alpha (9-13 Hz) coherence, alpha power, and 3- to 30-Hz power from five different combinations of EEG electrodes were used to predict semantic effects in the LDT trials. High pretrial coherence in the Right Hemisphere and Left Posterior-Parietal regions was associated with greater semantic facilitation (faster reaction times) in relatedprime trials and greater semantic inhibition (slower reaction times) in unrelatedprime trials, relative to neutral-prime trials. No power variables were associated with semantic effects. Results support an information flow model of the functional significance of EEG coherence to cognitive processing. @ 1990 Academic Press, Inc.

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