Auditory event related potentials during lexical categorization in the oddball paradigm  

Oleh:

Attias J. ; Pratt, H.

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 43 no. 2 (Aug. 1992), page 230-239.
Fulltext: 43_02_Attias_Pratt.pdf (641.89KB)

Ketersediaan

Perpustakaan PKBB Nomor Panggil: 405/BAL/43 Non-tandon: tidak ada Tandon: 1

Lihat Detail Induk

Isi artikel

Event related potentials (ERPs) and reaction times (RTs) were recorded from 18 subjects, performing lexical categorization of words and nonwords. Three sets of monosyllable utterances, differentiated in semantic and rhyming attributes, were presented using the "oddball paradigm." ERPs included a sustained negativity which began approximately 100 msec after stimulus onset and peaked at approximately 400 mses (SN4) poststimulus, in response to target as well as to nontarget word stimuli. Semantic effects on SN4 latency were observed only for target utterances. Nonmeaningful word targets were associated with longer SN4 peak latencies as well as slower RTs compared to meaningful word targets. It is suggested that these longer latencies are due to a longer time required for an exhaustive search in permanent memory before categorizing a stimulus as a nonmeaningful word. @ 1992 Academic Press, Inc.

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