Breitenstein C, Van Lancker D, Daum I, Waters C H
Department of Neurology, University of Muenster, Germany.
Brain Cogn. 2001 Mar;45(2):277-314. doi: 10.1006/brcg.2000.1246.
Little is known about the underlying dimensions of impaired recognition of emotional prosody that is frequently observed in patients with Parkinson's disease (PD). Because patients with PD also suffer from working memory deficits and impaired time perception, the present study examined the contribution of (a) working memory (frontal executive functioning) and (b) processing of the acoustic parameter speech rate to the perception of emotional prosody in PD. Two acoustic parameters known to be important for emotional classifications (speech duration and pitch variability) were systematically varied in prosodic utterances. Twenty patients with PD and 16 healthy controls (matched for age, sex, and IQ) participated in the study. The findings imply that (1) working memory dysfunctions and perception of emotional prosody are not independent in PD, (2) PD and healthy control subjects perceived vocal emotions categorically along two acoustic manipulation continua, and (3) patients with PD show impairments in processing of speech rate information.
对于帕金森病（PD）患者中经常观察到的情感韵律识别受损的潜在维度，我们知之甚少。由于PD患者还存在工作记忆缺陷和时间感知受损的情况，本研究考察了（a）工作记忆（额叶执行功能）和（b）声学参数语速处理对PD患者情感韵律感知的影响。在韵律话语中系统地改变了两个已知对情感分类很重要的声学参数（言语持续时间和音高变异性）。20名PD患者和16名健康对照者（在年龄、性别和智商方面匹配）参与了该研究。研究结果表明：（1）在PD中，工作记忆功能障碍和情感韵律感知并非相互独立；（2）PD患者和健康对照者沿着两个声学操作连续体对声音情感进行了分类感知；（3）PD患者在语速信息处理方面存在损伤。
