Departments of Psychiatry & Human Behavior and Pediatrics, Center for the Study of Children at Risk, Brown Alpert Medical School, Women & Infants Hospital, Providence, Rhode Island 02905, USA.
Autism Res. 2012 Oct;5(5):331-9. doi: 10.1002/aur.1244. Epub 2012 Aug 13.
This study examined differences in acoustic characteristics of infant cries in a sample of babies at risk for autism and a low-risk comparison group. Cry samples derived from vocal recordings of 6-month-old infants at risk for autism spectrum disorder (ASD; n = 21) and low-risk infants (n = 18) were subjected to acoustic analyses using analysis software designed for this purpose. Cries were categorized as either pain-related or non-pain-related based on videotape coding. At-risk infants produced pain-related cries with higher and more variable fundamental frequency (F (0) ) than low-risk infants. At-risk infants later classified with ASD at 36 months had among the highest F (0) values for both types of cries and produced cries that were more poorly phonated than those of nonautistic infants, reflecting cries that were less likely to be produced in a voiced mode. These results provide preliminary evidence that disruptions in cry acoustics may be part of an atypical vocal signature of autism in early life.
这项研究考察了自闭症风险婴儿样本和低风险对照组婴儿哭声的声学特征差异。使用为此目的设计的分析软件，对自闭症谱系障碍（ASD；n=21）风险婴儿和低风险婴儿（n=18）的 6 个月大声录音样本进行声学分析。哭声根据录像带编码分为与疼痛相关或非疼痛相关。高危婴儿产生的与疼痛相关的哭声的基频（F（0））比低危婴儿更高且更可变。在 36 个月时被归类为自闭症的高危婴儿，其两种哭声的 F（0）值均最高，并且其哭声的发声质量比非自闭症婴儿差，这反映出它们更不可能以浊音模式产生哭声。这些结果初步表明，哭声声学的中断可能是生命早期自闭症异常发声特征的一部分。
