Prior knowledge and context-specific expectations influence the perception of sensory events, e.g., speech, as well as complex higher-order cognitive operations like text reading. Here, we focused on pre-stimulus neural activity during sentence reading to examine text type-dependent attentional bias in anticipation of written stimuli, capitalizing on the functional relevance of brain oscillations in the alpha (8-12 Hz) frequency range. Two sex- and age-matched groups of participants (n = 24 each) read identical sentences on a screen at a fixed per-constituent presentation rate while their electroencephalogram was recorded; the groups were differentially instructed to read "sentences" (genre-neutral condition) or "verses from poems" (poetry condition). Relative alpha power (pre-cue vs. post-cue) in pre-stimulus time windows was greater in the poetry condition than in the genre-neutral condition. This finding constitutes initial evidence for genre-specific cognitive adjustments that precede processing proper, and potentially links current theories of discourse comprehension to current theories of brain function.

中文翻译：

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文本类型归因会调节句子阅读中的预刺激 alpha 功率

先验知识和特定于上下文的期望影响感官事件的感知，例如语音，以及复杂的高阶认知操作，如文本阅读。在这里，我们专注于句子阅读期间的预刺激神经活动，以检查预期书面刺激时依赖于文本类型的注意偏差，利用 alpha (8-12 Hz) 频率范围内大脑振荡的功能相关性。两个性别和年龄匹配的参与者组（每组 n = 24）在记录他们的脑电图的同时，以固定的每个组成部分的呈现率在屏幕上阅读相同的句子；不同的小组被指示阅读“句子”（流派中性条件）或“诗中的诗句”（诗歌条件）。相对 alpha 功率（预提示 vs. post-cue) 在预刺激时间窗口中在诗歌条件下比在体裁中立条件下更大。这一发现构成了在适当处理之前进行特定类型认知调整的初步证据，并可能将当前的话语理解理论与当前的大脑功能理论联系起来。