Department of Development and Regeneration, University of Leuven (KU Leuven), Leuven, Belgium.
Department of Experimental Psychology, University of Oxford, Oxford, UK.
Child Neuropsychol. 2021 Nov;27(8):995-1023. doi: 10.1080/09297049.2021.1915265. Epub 2021 May 4.
The aim was to develop a visuoperceptual profile schema reflecting visuoperceptual strengths and weaknesses, using neuropsychological tests. Secondly, this schema was used to quantify individual visuoperceptual profiles of children with and without cerebral visual impairment (CVI), and to identify differences in their profiles. Clinical records (2001-2018) of 630 children (386 males, 244 females; median age 77 months; interquartile range 63-98 months) suspected for CVI were reviewed. Neurological history, visuoperceptual results, ophthalmological, and neuroimaging data were retrieved. To develop the visuoperceptual schema, exploratory factor analyses (EFAs) were performed, followed by a Delphi study. In individual interviews, six experts were asked to "name the different visuoperceptual dimensions" and "what visuoperceptual dimensions are targeted by each of the 24 visuoperceptual subtests." To reach consensus, two questionnaire rounds (44 statements and 20 statements, respectively, five experts) followed. EFAs showed clinically uninterpretable results. The Delphi study revealed seven visuoperceptual dimensions; (1) visual discrimination and matching, (2) object or picture recognition, (3) visual spatial perception, (4) figure-ground perception, (5) motion perception, (6) visual short-term memory, and (7) scene perception. The most discriminating dimensions between CVI and no CVI were object/picture recognition ( = 0.56), visual spatial perception ( = 0.52), visual discrimination and matching ( = 0.47), and figure-ground perception ( = 0.39). Motion perception and visual short-term memory (both = 0.22) were less discriminating. Two case studies illustrate how to apply the visuoperceptual schema to characterize dysfunction and intact functions. Visuoperceptual profiling can serve as a basis for individualized therapies in heterogeneous disorders.
目的是使用神经心理学测试开发反映视知觉优势和劣势的视知觉剖面图。其次,使用该图式量化有无脑视觉障碍(CVI)的儿童的个体视知觉剖面图,并确定其剖面图的差异。回顾了 630 名(386 名男性,244 名女性;中位年龄 77 个月;四分位距 63-98 个月)疑似 CVI 儿童的临床记录(2001-2018 年)。检索了神经病史、视知觉结果、眼科和神经影像学数据。为了开发视知觉图式,进行了探索性因素分析(EFAs),然后进行了 Delphi 研究。在个别访谈中,要求六名专家“命名不同的视知觉维度”和“每个 24 个视知觉子测试针对哪些视知觉维度”。为了达成共识,进行了两轮问卷(分别为 44 项和 20 项陈述,涉及 5 名专家)。EFAs 显示结果无法进行临床解读。Delphi 研究揭示了七个视知觉维度;(1)视觉辨别和匹配,(2)物体或图片识别,(3)视觉空间感知,(4)图形背景感知,(5)运动感知,(6)视觉短期记忆,和(7)场景感知。区分 CVI 和非 CVI 的最具区分力的维度是物体/图片识别(=0.56)、视觉空间感知(=0.52)、视觉辨别和匹配(=0.47)和图形背景感知(=0.39)。运动感知和视觉短期记忆(均=0.22)的区分力较差。两个案例研究说明了如何应用视知觉图式来描述功能障碍和完整功能。视知觉剖析可以作为异质障碍个体化治疗的基础。