Impaired Timing and Frequency Discrimination in High-functioning Autism Spectrum Disorders
Impaired Timing and Frequency Discrimination in High-functioning Autism Spectrum Disorders
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DOI：
10.1007/s10803-013-1778-y
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发表时间：
2013-10-01
影响因子：
3.9
通讯作者：
Sininger, Yvonne S.
中科院分区：
文献类型：
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作者：
Bhatara, Anjali;Babikian, Talin;Sininger, Yvonne S.
自闭症谱系障碍(ASD)患者经常表现出频率知觉保留或增强，但时间知觉受损。本研究调查了12名患有ASD的青少年和15名年龄匹配的对照组的光谱和时间信息的处理。参与者完成了两项心理声学任务：一项确定了频率差异界限，另一项确定了差距检测阈值。结果显示，ASD组在最高标准频率处的频率辨别能力受损，但组间总体上没有差异。然而，当以听觉高敏感度来定义群体时，群体差异就出现了。对于差距检测任务，ASD组表现出更高的阈值。这支持了之前的研究，证明了ASD在时间感知上的缺陷，并表明了超敏感性和频率辨别能力之间的联系。
Individuals with autism spectrum disorders (ASD) frequently demonstrate preserved or enhanced frequency perception but impaired timing perception. The present study investigated the processing of spectral and temporal information in 12 adolescents with ASD and 15 age-matched controls. Participants completed two psychoacoustic tasks: one determined frequency difference limens, and the other determined gap detection thresholds. Results showed impaired frequency discrimination at the highest standard frequency in the ASD group but no overall difference between groups. However, when groups were defined by auditory hyper-sensitivity, a group difference arose. For the gap detection task, the ASD group demonstrated elevated thresholds. This supports previous research demonstrating a deficit in ASD in temporal perception and suggests a connection between hyper-sensitivity and frequency discrimination abilities.