Ruhr University Bochum, Faculty of Psychology, Universitätsstr. 150, 44801 Bochum, Germany; TU Dortmund University, Faculty of Rehabilitation Sciences, Department of Vision, Visual Impairments & Blindness, Emil-Figge-Str. 50, 44227, Dortmund, Germany.
Ruhr University Bochum, Faculty of Psychology, Universitätsstr. 150, 44801 Bochum, Germany.
Neuroimage. 2019 May 1;191:104-115. doi: 10.1016/j.neuroimage.2019.02.025. Epub 2019 Feb 11.
Successful navigation of our surroundings is of high environmental relevance and involves processing of the visual scenery. Scene-processing undergoes a major behavioral improvement during childhood. However, possible neural changes that underlie this cognitive development in scene perception are understudied in comparison to other stimulus categories. We used a functional magnetic resonance imaging (fMRI) scene localizer and behavioral recognition and memory tasks in 7-8-year-olds, 11-12-year-olds, and adults to test whether scene-selective areas-the parahippocampal place area (PPA), the retrosplenial cortex (RSC), and the occipital place area (OPA)-show a change in volume and selectivity with age, and whether this change is correlated with behavioral perception and memory performance. We find that children have a smaller PPA and OPA than adults, while the size of RSC does not differ. Furthermore, selectivity for scenes in the PPA and the OPA, but not in the RSC, increases with age. This increase seems to be driven by both increasing responses to preferred stimuli and decreasing responses to non-preferred stimuli. Our findings extend previous knowledge about visual cortex development by unveiling the underlying mechanisms of age-related volume and selectivity increases in the scene network especially elucidating the poorly understood development of the OPA.
成功地对周围环境进行导航具有很高的环境相关性,涉及对视觉场景的处理。在儿童时期,场景处理会经历重大的行为改善。然而,与其他刺激类别相比,这种场景感知认知发展背后的可能的神经变化在研究中相对较少。我们使用功能磁共振成像(fMRI)场景定位器以及行为识别和记忆任务,对 7-8 岁、11-12 岁和成年参与者进行了测试,以检验场景选择性区域(旁海马体位置区(PPA)、后扣带回皮层(RSC)和枕叶位置区(OPA))是否会随着年龄的增长而在体积和选择性上发生变化,以及这种变化是否与行为感知和记忆表现相关。我们发现,儿童的 PPA 和 OPA 比成年人小,而 RSC 的大小则没有差异。此外,PPA 和 OPA 中的场景选择性随着年龄的增长而增加,但 RSC 中的场景选择性则没有增加。这种增加似乎是由对偏好刺激的反应增加和对非偏好刺激的反应减少共同驱动的。我们的研究结果通过揭示场景网络中与年龄相关的体积和选择性增加的潜在机制,扩展了之前关于视觉皮层发育的知识,特别是阐明了 OPA 这一理解甚少的发育过程。