Hatzidaki Anna, Baus Cristina, Costa Albert
Center of Brain and Cognition, Universitat Pompeu Fabra Barcelona, Spain.
Center of Brain and Cognition, Universitat Pompeu Fabra Barcelona, Spain ; Laboratoire de Psychologie Cognitive, Centre National de la Recherche Scientifique - Université Aix-Marseille Marseille, France.
Front Psychol. 2015 Mar 27;6:351. doi: 10.3389/fpsyg.2015.00351. eCollection 2015.
The present study examined whether processing words with affective connotations in a listener's native language may be modulated by accented speech. To address this question, we used the Event Related Potential (ERP) technique and recorded the cerebral activity of Spanish native listeners, who performed a semantic categorization task, while listening to positive, negative and neutral words produced in standard Spanish or in four foreign accents. The behavioral results yielded longer latencies for emotional than for neutral words in both native and foreign-accented speech, with no difference between positive and negative words. The electrophysiological results replicated previous findings from the emotional language literature, with the amplitude of the Late Positive Complex (LPC), associated with emotional language processing, being larger (more positive) for emotional than for neutral words at posterior scalp sites. Interestingly, foreign-accented speech was found to interfere with the processing of positive valence and go along with a negativity bias, possibly suggesting heightened attention to negative words. The manipulation employed in the present study provides an interesting perspective on the effects of accented speech on processing affective-laden information. It shows that higher order semantic processes that involve emotion-related aspects are sensitive to a speaker's accent.
本研究考察了在听众母语中处理带有情感内涵的词汇是否会受到带口音语音的调节。为解决这个问题,我们使用了事件相关电位(ERP)技术,记录了以西班牙语为母语的听众在执行语义分类任务时的大脑活动,他们在听标准西班牙语或四种外国口音说出的积极、消极和中性词汇。行为结果显示,在母语和外国口音的语音中,情感词汇的反应潜伏期都比中性词汇长,积极词汇和消极词汇之间没有差异。电生理结果重复了情感语言文献中的先前发现,与情感语言处理相关的晚期正复合波(LPC)在头皮后部区域的幅度,情感词汇比中性词汇更大(更正)。有趣的是,发现外国口音的语音会干扰对积极效价的处理,并伴随着消极偏向,这可能表明对消极词汇的关注度提高。本研究采用的操作方法为带口音语音对处理情感负载信息的影响提供了一个有趣的视角。它表明,涉及情感相关方面的高阶语义过程对说话者的口音很敏感。