Boucart Muriel, Lenoble Quentin, Peyrin Carole
Inserm, CNRS, CHU Lille, UMR-S 1172 - Lille Neuroscience & Cognition, University of Lille, Lille, France.
Department of Psychology, University Grenoble Alpes, University Savoie Mont Blanc, Grenoble, France.
Exp Aging Res. 2025 Jul-Sep;51(4):526-537. doi: 10.1080/0361073X.2024.2435779. Epub 2024 Nov 29.
As the elderly population is growing worldwide and communication is increasingly relayed by visual interfaces, identifying age-related changes in the visual perception of complex stimuli is critical. We examined the effect of spatial frequency filtering on object categorization in young (mean 25 years) and older (mean 65 years) participants.
The stimuli used were low spatial frequency (LSF, cutoff 8 cpi) or high spatial frequency (HSF, cutoff 24 cpi) images of objects of various categories, and hybrid images composed of a LSF object superimposed on a HSF object from a different semantic category. Participants were asked to press a key when they detected an object from a specified category (e.g., animal).
Young participants categorized efficiently LSF and HSF images, and exhibited a bias towards the HSF component of hybrid images. Older participants showed a better performance on LSF than on HSF images and exhibited a strong bias towards the LSF component of hybrid image.
The results show that LSF are better preserved than HSF in older people. The greater interference of LSF than HSF in older than in young adults suggests that LSF are available earlier than HSF in older people.
随着全球老年人口的增长以及视觉界面在信息传递中愈发重要，识别复杂刺激视觉感知中与年龄相关的变化至关重要。我们研究了空间频率滤波对年轻（平均25岁）和年长（平均65岁）参与者物体分类的影响。
使用的刺激物包括各种类别的物体的低空间频率（LSF，截止频率8周/英寸）或高空间频率（HSF，截止频率24周/英寸）图像，以及由一个LSF物体叠加在来自不同语义类别的HSF物体上组成的混合图像。当参与者检测到来自指定类别（如动物）的物体时，要求他们按下一个按键。
年轻参与者能够有效地对LSF和HSF图像进行分类，并对混合图像的HSF成分表现出偏好。年长参与者在LSF图像上的表现优于HSF图像，并对混合图像的LSF成分表现出强烈偏好。
结果表明，老年人中LSF比HSF保存得更好。与年轻人相比，老年人中LSF比HSF的干扰更大，这表明老年人中LSF比HSF更早可用。
