Lange Violaine Michel, Perret Cyril, Laganaro Marina
Faculty of Psychology, University of Geneva, Switzerland; Danish Research Centre for Magnetic Resonance, Centre for Functional and Diagnostic Imaging and Research, Copenhagen University Hospital Hvidovre, Denmark; Department of Scandinavian Studies and Linguistics, University of Copenhagen, Denmark.
CerCA (UMR 7295), University of Poitiers, France.
Cortex. 2015 Jun;67:15-29. doi: 10.1016/j.cortex.2015.02.017. Epub 2015 Mar 17.
The present study builds upon findings from event-related potential (ERP) studies of single word production in order to shed light onto the mechanisms underlying the production of dual-word adjective-noun phrases (NPs). In a first experiment, we tested for potential differences elicited by visual stimuli varying in complexity -black and white line drawings, coloured line drawings, and arrays of drawings-in participants producing single nouns. Whilst naming latencies were similar for single noun production between visual stimuli conditions, ERPs differed between drawing arrays and single drawings in a time-window extending beyond early visual analysis. In a second experiment, different participants were asked to produce either single noun or adjective-noun dual-word phrases to black-and-white and coloured line drawings, respectively. Adjective-noun phrase production (2W) resulted in naming latencies 53 msec longer than single noun (1W) production. Waveform amplitude and topographic analyses carried out on stimulus- and response-aligned ERPs indicated that the two conditions differed in a late time-window, with a topographic pattern for 2W lasting from 300 to 480 msec after picture presentation whereas the corresponding pattern for 1W production lasted from 300 to 450 msec. Since this time window has been previously associated with phonological encoding in single word production, this result suggests that the cost of planning the second word in dual-word production may be incurred during phonological encoding of the first word. The results are discussed in light of current models of single and multi-word production.
本研究基于对单字产出的事件相关电位（ERP）研究结果，以阐明双字形容词 - 名词短语（NP）产出背后的机制。在第一个实验中，我们测试了在产出单个名词的参与者中，由复杂度不同的视觉刺激（黑白线条图、彩色线条图和图阵）引发的潜在差异。虽然在不同视觉刺激条件下，单个名词产出的命名潜伏期相似，但在超出早期视觉分析的时间窗口内，图阵和单个图形引发的ERP有所不同。在第二个实验中，分别要求不同的参与者对黑白和彩色线条图产出单个名词或形容词 - 名词双字短语。形容词 - 名词短语产出（2W）的命名潜伏期比单个名词（1W）产出长53毫秒。对刺激和反应对齐的ERP进行的波形幅度和地形分析表明，这两种条件在较晚的时间窗口内存在差异，2W的地形模式在图片呈现后300至480毫秒持续，而1W产出的相应模式持续300至450毫秒。由于这个时间窗口之前与单字产出中的语音编码相关，这一结果表明，双字产出中规划第二个单词的成本可能在第一个单词的语音编码过程中产生。我们根据当前的单字和多字产出模型对结果进行了讨论。
