The orientation selectivity of face identification.
The orientation selectivity of face identification.
复制标题
DOI：
10.1038/srep34204
复制
发表时间：
2016-09-28
影响因子：
4.6
通讯作者：
Greenwood JA
中科院分区：
文献类型：
--
作者：
Goffaux V;Greenwood JA
最近的工作表明，人脸识别是最有效的，当基于水平，而不是垂直，图像结构。由于目前还不清楚这种专业化的直立（相比倒置）的脸处理出现在视觉系统中，本研究的目的是系统地表征人脸识别的方向敏感性。直立的脸，识别性能在延迟匹配到样本的任务是最高的水平过滤图像和倾斜和垂直过滤图像急剧下降。性能由带宽约为25°的高斯函数很好地描述。面部反转显著地重塑了这一灵敏度曲线，整个调谐曲线向下移动，水平峰值的幅度减小，带宽增加一倍。还发现使用自然的外轮廓（与普通轮廓掩模相比）通过增加对近水平范围内的倾斜信息的敏感性来重塑该敏感性曲线。总而言之，虽然人脸识别是急剧调整到水平角度，反转和轮廓掩蔽可以深刻地重塑这种方向敏感性配置文件。这种图像驱动效应和神经元驱动效应的结合，使我们能够深入了解人脑初级阶段和高级阶段中方向选择过程之间的功能关系。
Recent work demonstrates that human face identification is most efficient when based on horizontal, rather than vertical, image structure. Because it is unclear how this specialization for upright (compared to inverted) face processing emerges in the visual system, the present study aimed to systematically characterize the orientation sensitivity profile for face identification. With upright faces, identification performance in a delayed match-to-sample task was highest for horizontally filtered images and declined sharply with oblique and vertically filtered images. Performance was well described by a Gaussian function with a bandwidth around 25°. Face inversion reshaped this sensitivity profile dramatically, with a downward shift of the entire tuning curve as well as a reduction in the amplitude of the horizontal peak and a doubling in bandwidth. The use of naturalistic outer contours (vs. a common outline mask) was also found to reshape this sensitivity profile by increasing sensitivity to oblique information in the near-horizontal range. Altogether, although face identification is sharply tuned to horizontal angles, both inversion and outline masking can profoundly reshape this orientation sensitivity profile. This combination of image- and observer-driven effects provides an insight into the functional relationship between orientation-selective processes within primary and high-level stages of the human brain.
登录
查看更多内容
DOI：
10.3758/s13414-014-0669-4
发表时间：
2014-07
期刊：
Attention, perception & psychophysics
影响因子：
--
作者：
Huynh CM;Balas B
通讯作者：
Balas B
影响因子：
2.2
作者：
Goffaux, Valerie;Rossion, Bruno;Goebel, Rainer
通讯作者：
Goebel, Rainer
影响因子：
2.6
作者：
Balas, Benjamin;Huynh, Carol;Schmidt, Jamie
通讯作者：
Schmidt, Jamie
影响因子：
3.7
作者：
Chaby, Laurence;Narme, Pauline;George, Nathalie
通讯作者：
George, Nathalie
影响因子：
64.8
作者：
BLAKEMOR.C;CARPENTE.RH;GEORGESO.MA
通讯作者：
GEORGESO.MA