Objective measurement of head movement differences in children with and without autism spectrum disorder.
Objective measurement of head movement differences in children with and without autism spectrum disorder.
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DOI：
10.1186/s13229-018-0198-4
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发表时间：
2018
期刊：
影响因子：
6.2
通讯作者：
Messinger DS
中科院分区：
文献类型：
--
作者：
Martin KB;Hammal Z;Ren G;Cohn JF;Cassell J;Ogihara M;Britton JC;Gutierrez A;Messinger DS
人类观察者通常对患有自闭症谱系障碍 (ASD) 的儿童的运动缺陷进行定性描述。尽管临床医生已经注意到在诊断自闭症儿童时非典型头部姿势（例如社交凝视和重复头部撞击）的重要性，但对自闭症谱系障碍中头部运动的定量理解仍然缺乏。在这里，我们使用基于自动化、独立于人的计算机视觉的头部跟踪 (Zface) 对患有和不患有 ASD 的儿童的头部运动动态进行定量比较。由于患有自闭症谱系障碍 (ASD) 的儿童通常会优先关注非社交刺激而不是社交刺激，因此我们调查了患有自闭症谱系障碍 (ASD) 的儿童与未患有自闭症谱系障碍 (ASD) 的儿童的头部运动动态是否因刺激社交性而异。当前的研究检查了患有自闭症谱系障碍 (n = 21) 和未患有自闭症谱系障碍 (n = 21) 的儿童头部运动动态的差异。孩子们在观看一段 16 分钟的社交和非社交刺激视频时被录像。使用 Zface 跟踪刚性头部运动的三个维度——俯仰（头部点头）、偏航（头部转动）和滚动（头部横向倾斜）。计算俯仰、偏航和滚转的均方根以指标头部角位移（头部移动量）和角速度（速度）的大小。与没有 ASD 的儿童相比，患有 ASD 的儿童表现出更大的偏航位移，表明头部转动更大，并且偏航和滚动速度更大，表明头部转动和倾斜更快。后续分析表明，头部运动动态的差异特定于社交刺激条件，而不是非社交刺激条件。患有 ASD 的儿童的头部运动动态（位移和速度）比没有 ASD 的儿童更大，这为之前的临床报告提供了定量基础。头部运动差异在横向（偏航和滚动）运动中很明显，但在垂直（俯仰）运动中则不然，并且特定于社交条件而不是非社交条件。当受到社交刺激时，患有自闭症谱系障碍的儿童的头部运动水平更高，并且比没有自闭症谱系障碍的儿童移动头部的速度更快。患有自闭症谱系障碍的儿童可能会利用头部运动来调节他们对社交场景的感知。本文的在线版本 (10.1186/s13229-018-0198-4) 包含补充材料，可供授权用户使用。
Deficits in motor movement in children with autism spectrum disorder (ASD) have typically been characterized qualitatively by human observers. Although clinicians have noted the importance of atypical head positioning (e.g. social peering and repetitive head banging) when diagnosing children with ASD, a quantitative understanding of head movement in ASD is lacking. Here, we conduct a quantitative comparison of head movement dynamics in children with and without ASD using automated, person-independent computer-vision based head tracking (Zface). Because children with ASD often exhibit preferential attention to nonsocial versus social stimuli, we investigated whether children with and without ASD differed in their head movement dynamics depending on stimulus sociality. The current study examined differences in head movement dynamics in children with (n = 21) and without ASD (n = 21). Children were video-recorded while watching a 16-min video of social and nonsocial stimuli. Three dimensions of rigid head movement—pitch (head nods), yaw (head turns), and roll (lateral head inclinations)—were tracked using Zface. The root mean square of pitch, yaw, and roll was calculated to index the magnitude of head angular displacement (quantity of head movement) and angular velocity (speed). Compared with children without ASD, children with ASD exhibited greater yaw displacement, indicating greater head turning, and greater velocity of yaw and roll, indicating faster head turning and inclination. Follow-up analyses indicated that differences in head movement dynamics were specific to the social rather than the nonsocial stimulus condition. Head movement dynamics (displacement and velocity) were greater in children with ASD than in children without ASD, providing a quantitative foundation for previous clinical reports. Head movement differences were evident in lateral (yaw and roll) but not vertical (pitch) movement and were specific to a social rather than nonsocial condition. When presented with social stimuli, children with ASD had higher levels of head movement and moved their heads more quickly than children without ASD. Children with ASD may use head movement to modulate their perception of social scenes. The online version of this article (10.1186/s13229-018-0198-4) contains supplementary material, which is available to authorized users.
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影响因子：
11.2
作者：
Hammal Z;Cohn JF;George DT
通讯作者：
George DT
DOI：
10.1111/j.1469-7610.2006.01531.x
发表时间：
2006-06-01
影响因子：
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作者：
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影响因子：
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