The precise time course of lexical activation: MEG measurements of the effects of frequency, probability, and density in lexical decision  

Oleh:

Stockall, Linnaea ; Stringfellow, Andrew ; Marantz, Alec

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Brain and Language (Full Text) vol. 90 no. 1-3 (2004), page 88-94.
Topik: MEG; Lexical decision; Lexical access; Lexical frequency; Phonotactic probability; Neighborhood density effects; M350
Fulltext: 90_01-03_Stockall.pdf (240.51KB)

Isi artikel

Visually presented letter strings consistently yield three MEG response components: the M170, associated with letter-string processing (Tarkiainen, Helenius, Hansen, Cornelissen, & Salmelin, 1999); the M250, affected by phonotactic probability, (Pylkk€anen, Stringfellow, & Marantz, 2002); and the M350, responsive to lexical frequency (Embick, Hackl, Schaeffer, Kelepir, & Marantz, 2001). Pylkk€anen et al. found evidence that the M350 reflects lexical activation prior to competition among phonologically similar words. We investigate the effects of lexical and sublexical frequency and neighborhood density on the M250 and M350 through orthogonal manipulation of phonotactic probability, density, and frequency. The results confirm that probability but not density affects the latency of the M250 and M350; however, an interaction between probability and density on M350 latencies suggests an earlier influence of neighborhoods than previously reported.

Opini Anda

Klik untuk menuliskan opini Anda tentang koleksi ini!

Kembali