Morrongiello B A, Fenwick K D, Hillier L, Chance G
Department of Psychology, University of Guelph, Ontario, Canada.
Dev Psychobiol. 1994 Dec;27(8):519-38. doi: 10.1002/dev.420270805.
Newborns' localization of sounds was examined in two experiments that utilized different psychophysical procedures and imposed different task demands. The results of both experiments were consistent in indicating that neonates not only differentiate the hemifield of a sound source but have some capacity to localize a sound within the hemifields. Adjustment of their initial head turn angle following a within-hemifield shift in location of an ongoing sound indicated that head orientation in neonates is elicited not only by sound onset but also by changes in location of an ongoing sound. Thus, multiple stimulus parameters impact on this neonatal response. Results are related to research on sound localization in older infants, and discussed in light of early development of the central auditory system.
在两项采用不同心理物理学程序并施加不同任务要求的实验中，对新生儿的声音定位进行了研究。两项实验的结果均一致表明，新生儿不仅能区分声源的半侧视野，而且具备在半侧视野内定位声音的能力。持续声音在半侧视野内位置发生变化后，新生儿对其初始转头角度的调整表明，新生儿的头部定向不仅由声音起始引发，还由持续声音位置的变化引发。因此，多个刺激参数会影响这种新生儿反应。研究结果与对大龄婴儿声音定位的研究相关，并根据中枢听觉系统的早期发育进行了讨论。
