INDEPENDENT ASPECTS OF SPEECH TIMING IN NEUROLOGICAL DISORDERS

帕金森病患者的知觉和听觉研究 Cv音节中位置对比的产生是从孤立的 /ba/、/da/和/ga/的生产到/pa/、/ta/的连续生产 和/ka/以确定是否连续出现更大困难 演讲。听众在强迫选择上的可理解性得分 辨认任务显示正常的可理解性。声学测量 第一共振峰和第二共振峰的变化率和发声时间 结果与正常的差异很小。这表明，这些 患者在发音对比中的停辅音位置错误很少 在受控语音测试中。这些实验室结果并不是 与语音清晰度差的临床印象相称 患者在交谈中。已经启动了两种新类型的研究 今年。在一种情况下，感知和听觉测量将由停顿 以及嵌入在扩展语音短语中的CV音节和VC音节中的摩擦。 另一种是词频、词长和语音的影响 对语音起始时间、移动速度和速度的测量进行规划 正在对正常成年人和 帕金森氏症患者。 唇颌部运动速度和位移的初步研究 患有迟发性运动障碍的受试者检查了自愿言语任务中的运动。 达到了相同的最大位移点，但速度较低 这表明自愿性活动受到这种紊乱的影响。

Perceptual and acoustic studies of Parkinson's disease patients' productions of place contrasts in CV syllables were extended from isolated productions of /ba/, /da/ and /ga/ to continuous productions of /pa/, /ta/ and /ka/ to determine whether greater difficulties occur in continuous speech. Intelligibility scores of listeners on a forced choice identification task demonstrated normal intelligibility. Acoustic measures of first and second formants, rate of change and voice onset time also resulted in very few differences from normal. This indicated that these patients have few errors in stop consonants place of articulation contrasts in controlled speech testing. These laboratory results are not commensurate with clinical impressions of poor speech intelligibility of patients during conversation. Two new types of studies have been initiated this year. In one, perceptual and acoustic measures will be made of stops and fricatives in CV and VC syllables embedded in extended speech phrases. In the other, the effects of word frequency, word length and speech planning on measures of speech initiation time, movement velocity and inter-articulator coordination are being studied in normal adults and Parkinson's disease patients. A pilot study of lip and jaw movement velocity and displacement in patients with tardive dyskinesia examined movement during voluntary speech tasks. The same maximum displacement points were reached but at lower velocities suggesting that voluntary movement is affected by this disorder.