ABSTRACT

The authors investigated the influence of spatial frequencies in foveal vision in glaucomatous patients in a recognition task of facial expressions. Nineteen patients, 16 age-matched and 14 young controls saw centrally presented photographs of faces. Participants categorized the facial expressions as happy, angry or neutral. Two versions were tested: filtered faces of either low (LSF) or high (HSF) spatial frequency content and hybrid faces constructed from a face with LSF content superimposed on a face with HSF content with differing facial expressions. Compared to age-matched controls a significant deficit was observed both on HSF and on LSF filtered faces for patients. Controls, but not patients, were biased towards the HSF component of the hybrid faces. Different spatial frequencies are normally used to recognize different facial expressions. Impaired processing of a spatial frequency bandwidth due to an ocular pathology can therefore lead to misinterpretation of emotions, and impact on social interactions.

摘要

作者在面部表情识别任务中研究了空间频率对青光眼患者中心凹视力的影响。19 名患者、16 名年龄匹配和 14 名年轻对照者看到集中呈现的面部照片。参与者将面部表情分为快乐、愤怒或中性。测试了两个版本：低 (LSF) 或高 (HSF) 空间频率内容的过滤人脸，以及由具有 LSF 内容的人脸叠加在具有不同面部表情的 HSF 内容人脸上构建的混合人脸。与年龄匹配的对照相比，在 HSF 和 LSF 过滤的患者面部均观察到显着缺陷。对照组，但不是患者，偏向于混合面部的 HSF 成分。通常使用不同的空间频率来识别不同的面部表情。