Pell M D
School of Communication Sciences and Disorders, McGill University, Montréal, Canada.
Brain Lang. 1999 Sep;69(2):161-92. doi: 10.1006/brln.1999.2065.
To illuminate the nature of the right hemisphere's involvement in expressive prosodic functions, a story completion task was administered to matched groups of right hemisphere-damaged (RHD) and nonneurological control subjects. Utterances which simultaneously specified three prosodic distinctions (emphatic stress, sentence modality, emotional tone) were elicited from each subject group and then subjected to acoustic analysis to examine various fundamental frequency (F(0)) attributes of the stimuli. Results indicated that RHD speakers tended to produce F(0) patterns that resembled normal productions in overall shape, but with significantly less F(0) variation. The RHD patients were also less reliable than normal speakers at transmitting emphasis or emotional contrasts when judged from the listener's perspective. Examination of the results across a wide variety of stimulus types pointed to a deficit in successfully implementing continuous aspects of F(0) patterns following right hemisphere insult.
为了阐明右半球在表达性韵律功能中的作用本质，对右半球损伤（RHD）组和非神经学对照受试者的匹配组进行了故事完成任务。从每个受试者组中引出同时体现三种韵律区别（强调重音、句子模态、情感语调）的话语，然后对其进行声学分析，以检查刺激的各种基频（F(0)）属性。结果表明，RHD说话者倾向于产生在整体形状上类似于正常发音的F(0)模式，但F(0)变化明显较少。从听众的角度判断，RHD患者在传达重音或情感对比方面也不如正常说话者可靠。对各种刺激类型的结果进行检查后发现，右半球受损后在成功实现F(0)模式的连续方面存在缺陷。
