The role of subcortical structures in language function is complex and dependent on language task, with studies increasingly showing subcortical involvement for the production of formulaic language, including recited speech. Individuals with Parkinson's disease (PD), with (n = 6) and without (n = 7) surgical treatment, deep brain stimulation (DBS), were compared to healthy adults (n = 14) to determine whether individuals with subcortical dysfunction produce more errors during a recitation speech task. Participants were asked to recite poems, prayers, and rhymes familiar to them in order to determine the effects of subcortical disease on recited speech ability. When compared with healthy controls, the DBS-OFF group produced significantly more error words, suggesting that deficits in recitation arise with severe states of subcortical dysfunction. Individuals with DBS in the ON or OFF conditions did not differ significantly during the recited speech task. Results support a model of language where large units of overlearned language are at least partially modulated by subcortical structures.

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皮层下结构在背诵演讲中的作用：帕金森病的研究

皮层下结构在语言功能中的作用是复杂的并且取决于语言任务，越来越多的研究表明皮层下结构参与了公式化语言的产生，包括背诵的言语。将接受（n = 6）和未接受（n = 7）手术治疗、深部脑刺激 (DBS) 的帕金森病 (PD) 个体与健康成人 (n = 14) 进行比较，以确定皮层下功能障碍的个体是否产生更多背诵演讲任务中的错误。参与者被要求背诵他们熟悉的诗歌、祈祷和押韵，以确定皮层下疾病对背诵语言能力的影响。与健康对照组相比，DBS-OFF 组产生的错误词明显更多，这表明在严重的皮质下功能障碍状态下会出现背诵缺陷。DBS 处于 ON 或 OFF 状态的个体在背诵语音任务期间没有显着差异。结果支持一种语言模型，其中大量过度学习的语言至少部分由皮层下结构调节。