Sensory differences are common in Autism Spectrum Disorder (ASD). While there is no well‐accepted method to measure sensory differences objectively, there is accumulating evidence from recent years concerning sensory perception, including data concerning temporal discrimination thresholds of individuals with ASD as measured by different measures. The somatosensory temporal discrimination (STD) test measures the threshold at which an individual can temporally discriminate multiple tactile stimuli delivered in succession. We aimed to investigate tactile perception in ASD and hypothesized that children with ASD have impaired STD related to their subjective sensory symptoms and daily difficulties. Thirty adolescents with ASD and 30 typically developed subjects were recruited. The Childhood Autism Rating Scale, Strengths and Difficulties Questionnaire, and Adolescent/Adult Sensory Profile were implemented before STD evaluation. Average somatosensory detection (1.48 ± 0.42) and discrimination thresholds (112.70 ± 43.45) of the children with ASD were significantly higher (P = 0.010, P = 0.001, respectively) than those of the controls (1.18 ± 0.42, 79.95 ± 31.60, respectively). Sensory seeking scores of the ASD group (40.8 ± 7.60) were significantly lower (P = 0.024) than those of the control group (45.83 ± 9.17). However, the psychophsycal thresholds did not have any statistically significant relationships with subjective sensory symptoms or daily difficulties. This study demonstrates impaired sensory processing in ASD evaluated by STD and its lack of relationship with subjective sensory symptoms and daily difficulties. This psychophysical evidence of increased STD thresholds and decreased sensory seeking profile supports the disturbances in the regulation of sensory processing in ASD.

中文翻译：

---

自闭症谱系障碍的体感时间歧视

感觉差异在自闭症谱系障碍（ASD）中很常见。尽管目前尚无公认的客观测量感官差异的方法，但近年来积累了有关感官知觉的证据，包括有关通过不同方法测量的ASD患者的时间歧视阈值的数据。体感时间辨别（STD）测试测量阈值，在此阈值下，个人可以在时间上辨别连续传递的多个触觉刺激。我们旨在调查ASD中的触觉，并假设ASD儿童的STD受损与其主观感觉症状和日常困难有关。招募了30名ASD青少年和30名典型的发达受试者。儿童自闭症评分量表，长处和困难调查表，在性病评估之前先实施青少年和成人感官档案。ASD患儿的平均体感检测（1.48±0.42）和辨别阈值（112.70±43.45）明显更高（P = 0.010，P = 0.001）分别比对照组（分别为1.18±0.42、79.95±31.60）高。ASD组的感官寻求得分（40.8±7.60）显着低于对照组（45.83±9.17）（P = 0.024）。但是，心理阈值与主观感觉症状或日常困难没有统计学上的显着关系。这项研究表明，STD评估了ASD的感觉加工受损，并且缺乏与主观感觉症状和日常困难的关系。STD阈值增加和感觉寻求特征降低的这种心理生理证据支持了ASD感觉处理调节的干扰。