A dual-route perspective on brain activation in response to visual words: Evidence for a length by lexicality interaction in the visual word form area (VWFA)

作者：Schurz Matthias^*; Sturm Denise; Richlan Fabio; Kronbichler Martin; Ladurner Gunther; Wimmer Heinz

来源：NeuroImage, 2010, 49(3): 2649-2661.

DOI：10.1016/j.neuroimage.2009.10.082

Based on our previous work, we expected the Visual Word Form Area (VWFA) in the left ventral visual pathway to be engaged by both whole-word recognition and by serial sublexical coding of letter strings. To examine this double function, a phonological lexical decision task (i.e, "Does xxx sound like an existing word?") presented short and long letter strings of words. pseudohomophones, and pseudowords (e g, Taxi, Taksi and Tazi) Main findings were that the length effect for words was limited to occipital regions and absent in the VWFA In contrast, a marked length effect for pseudowords was found throughout the ventral Visual pathway including the VWFA, as well as in regions presumably engage(] by Visual attention and silent-articulatory processes. The length by lexicality interaction on brain activation corresponds to well-established beh

• 出版日期2010-2-1