Tactile sensitivity in Asperger syndrome
Tactile sensitivity in Asperger syndrome
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DOI：
10.1016/j.bandc.2005.12.013
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发表时间：
2006-06-01
影响因子：
2.5
通讯作者：
Haggard, Patrick
中科院分区：
文献类型：
--
作者：
Blakemore, Sarah-Jayne;Tavassoli, Teresa;Haggard, Patrick
有传闻说，自闭症和艾伯格综合症患者对触摸过敏。在两个实验中，我们测量了触觉阈值和阈上触觉敏感性在一组成年人与Alfreger综合征。在第一个实验中，测量触觉感知阈值。使用两种频率的振动触觉刺激：30和200 Hz。结果表明，在200 Hz下，而不是在30 Hz下，在Bogger组中的触觉感知阈值显著降低，从而证实了触觉超敏反应，但仅针对一类刺激。第二个实验研究了自发运动是否会影响一组患有Alfreger综合征的成年人的触觉感知。一个阈上的触觉刺激产生的参与者（自产条件）或由实验人员（外部产生的条件）和参与者被要求评价触觉刺激的感知。结果表明，虽然两个实验组和对照组都认为自己产生的触摸比外部触摸更不痒，但实验组认为这两种类型的触觉刺激比对照组明显更痒和更强烈。这个实验证实了触觉超敏反应的发现，但也表明，自发触摸的感知结果在患有Alfreger综合征的人中以正常方式减弱。因此，这一过程的异常不能解释他们的触觉过敏。(c)2006年爱思唯尔公司All rights reserved.
People with autism and Asperger syndrome are anecdotally said to be hypersensitive to touch. In two experiments, we measured tactile thresholds and suprathreshold tactile sensitivity in a group of adults with Asperger syndrome. In the first experiment, tactile perceptual thresholds were measured. Two frequencies of vibrotactile stimulation were used: 30 and 200Hz. The results demonstrated significantly lower tactile perceptual thresholds in the Asperger group at 200 Hz but not at 30 Hz, thus confirming tactile hypersensitivity but only for one class of stimulus. A second experiment investigated whether self-produced movement affected the perception of touch in a group of adults with Asperger syndrome. A suprathreshold tactile stimulus was produced either by the participant (self-produced condition) or by the experimenter (externally produced condition) and participants were asked to rate the perception of the tactile stimulation. The results demonstrated that, while both Asperger and control groups rated self-produced touch as less tickly than external touch, the Asperger group rated both types of tactile stimulus as significantly more tickly and intense than did the control group. This experiment confirms the finding of tactile hypersensitivity, but shows that the perceptual consequences of self-produced touch are attenuated in the normal way in people with Asperger syndrome. An abnormality in this process cannot therefore account for their tactile hypersensitivity. (c) 2006 Elsevier Inc. All rights reserved.