Freie Universität Berlin, Brain Language Laboratory, Department of Philosophy and Humanities, Berlin, Germany; Cluster of Excellence 'Matters of Activity. Image Space Material', Humboldt Universität zu Berlin, Berlin, Germany.
Freie Universität Berlin, Brain Language Laboratory, Department of Philosophy and Humanities, Berlin, Germany; Cluster of Excellence 'Matters of Activity. Image Space Material', Humboldt Universität zu Berlin, Berlin, Germany; Berlin School of Mind and Brain, Humboldt Universität zu Berlin, Berlin, Germany; Einstein Center for Neurosciences, Berlin, Germany.
Cortex. 2022 Oct;155:357-372. doi: 10.1016/j.cortex.2022.06.017. Epub 2022 Aug 8.
The recent finding of predictive brain signals preceding anticipated perceptual and linguistic stimuli opens new questions for experimental research. Here, we address the possible brain basis of phonological predictions regarding the features of specific speech sounds and their relationship to phonological priming. To this end, we recorded EEG correlates of both pre- and post-stimulus brain responses in a phonological priming study. Redundant spoken sounds induced stimulus expectations, which manifested as a slow-wave anticipatory activity (the Prediction Potential, PP), whereas articulatory-congruent (e.g.,/bƏ/in the context of expected/pƏ/) pairs elicited weaker post-stimulus MMN-like responses as compared to the articulatory-incongruent (e.g.,/bƏ/in the context of expected/dƏ/) pairs, a pattern reminiscent of perceptual priming mediated by articulatory-motor areas. Source analysis reveal clusters of activation in lateral prefrontal, temporal and ventral motor areas, thus providing the proof of the relevance of multimodal representation units subserving predictive and perceptual phonemic processing.
最近发现的预测性脑信号先于预期的感知和语言刺激，为实验研究提出了新的问题。在这里，我们探讨了特定语音特征的语音预测的可能大脑基础及其与语音启动的关系。为此，我们在语音启动研究中记录了脑电相关性的刺激前和刺激后脑反应。冗余的语音刺激引发了刺激预期，表现为慢波预期活动（预测电位，PP），而与发音一致（例如，在预期的/pƏ/语境中的/bƏ/）的对诱发的类似 MMN 的后刺激反应比发音不一致（例如，在预期的/dƏ/语境中的/bƏ/）的对弱，这种模式类似于由发音运动区域介导的感知启动。源分析显示，外侧前额叶、颞叶和腹侧运动区有激活簇，因此为支持预测和感知音位处理的多模态表示单元的相关性提供了证据。
