Barry R J, James A L
School of Education, University of New South Wales, Kensington, Australia.
Int J Psychophysiol. 1988 Jun;6(2):139-49. doi: 10.1016/0167-8760(88)90045-1.
Phasic changes in respiratory period, electrodermal activity, and the vasoconstrictive peripheral pulse amplitude response, were examined in matched groups of autistic, retarded, and normal children using repeated presentation of simple visual and auditory stimuli of differing magnitudes. Analysis of response magnitudes as a function of group membership, trials, stimulus magnitude, and age, indicated both similarities and differences between the autistic and control groups. The autistic group differed from the control groups in its failure to show response habituation to repeatedly presented stimuli. However, data indicated that autistic children coded stimulus magnitude similarly to controls, suggesting that the failure to adequately process stimulus novelty does not reflect a general processing failure. Autistic children also exhibited relative hyperreactivity in all measures. Age effects showed this to be interpretable as reflecting developmental delay. These two differences support a recent two-factor theory of autism.
在自闭症、智力迟钝和正常儿童的匹配组中，通过反复呈现不同强度的简单视觉和听觉刺激，研究了呼吸周期、皮肤电活动以及血管收缩外周脉搏振幅反应的阶段性变化。对反应强度作为组群归属、试验次数、刺激强度和年龄的函数进行分析，结果表明自闭症组和对照组之间既有相似之处，也有不同之处。自闭症组与对照组的不同之处在于，对于反复呈现的刺激，它未能表现出反应习惯化。然而，数据表明自闭症儿童对刺激强度的编码与对照组相似，这表明未能充分处理刺激新颖性并不反映一般的处理失败。自闭症儿童在所有测量指标中也表现出相对的反应过度。年龄效应表明，这可以解释为反映了发育迟缓。这两个差异支持了最近的自闭症双因素理论。
