Video-based quantification of body movement during social interaction indicates the severity of negative symptoms in patients with schizophrenia
Video-based quantification of body movement during social interaction indicates the severity of negative symptoms in patients with schizophrenia
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DOI：
10.1016/j.schres.2010.03.032
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发表时间：
2010-08-01
影响因子：
4.5
通讯作者：
Tschacher, Wolfgang
中科院分区：
文献类型：
--
作者：
Kupper, Zeno;Ramseyer, Fabian;Tschacher, Wolfgang
在精神分裂症中，非语言行为，包括身体运动，具有理论和临床重要性。虽然非语言表达能力的降低是精神分裂症阴性症状的主要组成部分，但很少有研究客观地评估社会交往中的身体运动。在本研究中，378个简短的，录像角色扮演的场景，涉及27个稳定的门诊诊断为偏执型精神分裂症患者进行了分析，使用运动能量分析（MEA）。这种方法能够结合普通视频记录客观测量身体运动。计算运动参数（运动时间百分比，运动速度）和独立PANSS访谈的症状评分之间的相关性。运动参数被证明是高度可靠的。与预测一致，减少运动和运动速度与阴性症状相关。因此，在少于20%的观察时间内表现出明显运动的患者中，突出的阴性症状是非常可能的。作为对照措施，将角色扮演场景中患者表现出的运动百分比与他们正常的互动者进行比较。阴性症状的患者与正常的相互作用者不同，表现出显着减少头部和身体运动。两个特定的阳性症状可能与运动参数相关：怀疑倾向于与头部运动减少相关，而不寻常的思想内容的表达倾向于与运动增加相关。总的来说，一个密切的和理论上有意义的关联之间的客观运动参数和症状profiles.MEA似乎是一个客观的，可靠的和有效的方法来量化非语言行为，一个方面，这可能提供新的见解的过程中减少精神分裂症的表现力。(C)2010 Elsevier B.V.保留所有权利。
In schizophrenia, nonverbal behavior, including body movement, is of theoretical and clinical importance. Although reduced nonverbal expressiveness is a major component of the negative symptoms encountered in schizophrenia, few studies have objectively assessed body movement during social interaction. In the present study, 378 brief, videotaped role-play scenes involving 27 stabilized outpatients diagnosed with paranoid-type schizophrenia were analyzed using Motion Energy Analysis (MEA). This method enables the objective measuring of body movement in conjunction with ordinary video recordings. Correlations between movement parameters (percentage of time in movement, movement speed) and symptom ratings from independent PANSS interviews were calculated. Movement parameters proved to be highly reliable. In keeping with predictions, reduced movement and movement speed correlated with negative symptoms. Accordingly, in patients who exhibited noticeable movement for less than 20% of the observation time, prominent negative symptoms were highly probable. As a control measure, the percentage of movement exhibited by the patients during role-play scenes was compared to that of their normal interactants. Patients with negative symptoms differed from normal interactants by showing significantly reduced head and body movement. Two specific positive symptoms were possibly related to movement parameters: suspiciousness tended to correlate with reduced head movement, and the expression of unusual thought content tended to relate to increased movement. Overall, a close and theoretically meaningful association between the objective movement parameters and the symptom profiles was found. MEA appears to be an objective, reliable and valid method for quantifying nonverbal behavior, an aspect which may furnish new insights into the processes related to reduced expressiveness in schizophrenia. (C) 2010 Elsevier B.V. All rights reserved.