Prescott J, Andrews G
Int J Psychophysiol. 1984 Nov;2(2):121-30. doi: 10.1016/0167-8760(84)90005-9.
The early and late components of the CNV were measured in 18 stutterers and 18 non-stutterers, all dextral, prior to a manual and 3 speech tasks. It was hypothesized that, due to a proposed deficit in articulatory timing, prior to the more complex speech tasks, stutterers would show reduced late CNV amplitudes over Broca's area when compared to the non-stutterers. This hypothesis was not confirmed. In both groups, there was a finding of greater late CNV activity over the right hemisphere prior to speech responses. Explanations for this finding in terms of (a) CNV polarity, and (b) right hemisphere involvement in the speech responses used, are proposed. It is suggested that attention be paid to the nature of the response when attempting to record slow brain potentials prior to speech.
在18名口吃者和18名非口吃者（均为右利手）中，于一项手动任务和三项言语任务之前测量了伴随负变化（CNV）的早期和晚期成分。研究假设，由于推测存在发音时间缺陷，在更复杂的言语任务之前，与非口吃者相比，口吃者在布洛卡区的晚期CNV波幅会降低。这一假设未得到证实。在两组中，均发现在言语反应之前右半球的晚期CNV活动更强。针对这一发现，从（a）CNV极性和（b）右半球参与所用言语反应的角度提出了解释。建议在试图记录言语之前的慢脑电位时，要注意反应的性质。
