How do monkeys view faces? - a study of eye movements
How do monkeys view faces? - a study of eye movements
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DOI：
10.1007/s00221-003-1429-1
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发表时间：
2003-06-01
影响因子：
2
通讯作者：
Young, MP
中科院分区：
文献类型：
--
作者：
Guo, K;Robertson, RG;Young, MP
面孔知觉在灵长类动物的社会交往中起着至关重要的作用。我们研究了恒河猴（Macaca mulatta）在观看人脸图像时产生的眼球运动模式。使用植入的眼线圈准确记录眼睛位置，同时在计算机屏幕上呈现猴子和人类面部的中性直立，倒置和混乱图像。猴子在观看熟悉和不熟悉的猴子面部图像时，或者在观看猴子和人类面部图像时，表现出类似的眼睛扫描模式。没有观察到差异的分布，观看时间，固定的数量，时间到审判的第一眼扫视到当地的面部特征，和时间和空间特征的观看模式在整个面部图像。然而，在试验的最初几秒钟内，不熟悉面孔的眼睛区域重新固定的可能性更大，这表明眼睛对于身份的初始编码很重要。事实上，在所有面部图像的眼睛区域中发现了最高的注视密度。当呈现颠倒或杂乱的面孔时，每幅图像的观看时间和注视次数减少。在这些修改后的图像中，眼睛区域仍然是主要的固定区域。然而，针对眼睛的注视次数从直立图像到倒置版本再到杂乱的面部图像单调下降。尽管如此，无论其他特征的排列如何，眼睛仍然是最显着的面部亚结构，尽管它们获得的显着程度可能既取决于眼睛的低水平属性，也取决于面部特征的整体排列。
Face perception plays a crucial role in primate social communication. We have investigated the pattern of eye movements produced by rhesus monkeys (Macaca mulatta) as they viewed images of faces. Eye positions were recorded accurately using implanted eye coils, while neutral upright, inverted and scrambled images of monkey and human faces were presented on a computer screen. The monkeys exhibited a similar eye scan pattern while viewing familiar and unfamiliar monkey face images, or while viewing monkey and human face images. No differences were observed in the distribution of viewing times, number of fixations, time into the trial of first saccade to local facial features, and the temporal and spatial characteristics of viewing patterns across the facial images. However, there was a greater probability of re-fixation of the eye region of unfamiliar faces during the first few seconds of the trial suggesting that the eyes are important for the initial encoding of identity. Indeed, the highest fixation density was found in the eye region of all the face images. The viewing duration and the number of fixations per image decreased when inverted or scrambled faces were presented. The eye region in these modified images remained the primary area of fixation. However, the number of fixations directed to the eyes decreased monotonically from the upright images through the inverted versions to the scrambled face images. Nonetheless, the eyes remain the most salient facial substructure regardless of the arrangement of other features, although the extent of salience which they attain may depend both on the low level properties of the eyes and on the global arrangement of facial features.