Retinotopy of the face aftereffect

被引:90
作者
Afraz, Seyed-Reza [1 ]
Cavanagh, Patrick [1 ,2 ]
机构
[1] Harvard Univ, Dept Psychol, Cambridge, MA 02138 USA
[2] Univ Paris 05, Lab Psychol Percept, Paris, France
关键词
face aftereffect; translation sensitivity; object perception;
D O I
10.1016/j.visres.2007.10.028
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Physiological results for the size of face-specific units in inferotemporal cortex (IT) support an extraordinarily large range of possible sizes-from 2.5 degrees to 30 degrees or more. We use a behavioral test of face-specific aftereffects to measure the face analysis regions and find a coarse retinotopy consistent with receptive fields of intermediate size (10 degrees-12 degrees at 3 degrees eccentricity). In the first experiment, observers were adapted to a single face at 3 degrees from fixation. A test (a morph of the face and its anti-face) was then presented at different locations around fixation and subjects classified it as face or anti-face. The face aftereffect (FAE) was not constant at all test locations-it dropped to half its maximum value for tests 5 degrees from the adapting location. Simultaneous adaptation to both a face and its anti-face, placed at opposite locations across fixation, produced two separate regions of opposite aftereffects. However, with four stimuli, faces alternating with anti-faces equally spaced around fixation, the FAE was greatly reduced at all locations, implying a fairly coarse localization of the aftereffect. In the second experiment, observers adapted to a face and its anti-face presented either simultaneously or in alternation. Results showed that the simultaneous presentation of a face and its anti-face leads to stronger FAEs than sequential presentation, suggesting that face processing has a dynamic nature and its region of analysis is sharpened when there is more than one face in the scene. In the final experiment, a face and two anti-face flankers with different spatial offsets were presented during adaptation and the FAE was measured at the face location. Results showed that FAE at the face location was inhibited more as the distance of anti-face flankers to the face stimulus was reduced. This confirms the spatial extent of face analysis regions in a test with a fixed number of stimuli where only distance varied. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码:42 / 54
页数:13
相关论文
共 72 条
[1]   Microstimulation of inferotemporal cortex influences face categorization [J].
Afraz, Seyed-Reza ;
Kiani, Roozbeh ;
Esteky, Hossein .
NATURE, 2006, 442 (7103) :692-695
[2]   The nature of synthetic face adaptation [J].
Anderson, ND ;
Wilson, HR .
VISION RESEARCH, 2005, 45 (14) :1815-1828
[3]  
[Anonymous], 1982, Mental images and their transformations
[4]   EVIDENCE FOR COMPLETE TRANSLATIONAL AND REFLECTIONAL INVARIANCE IN VISUAL OBJECT PRIMING [J].
BIEDERMAN, I ;
COOPER, EE .
PERCEPTION, 1991, 20 (05) :585-593
[5]   ADAPTATION TO INVISIBLE GRATINGS AND SITE OF BINOCULAR RIVALRY SUPPRESSION [J].
BLAKE, R ;
FOX, R .
NATURE, 1974, 249 (5456) :488-490
[6]  
BLANZ V, 1999, 1999 S INT 3D GRAPH, P187
[7]  
Bron A.J., 1997, WOLFFS ANATOMY EYE O
[8]   Eye movements: Building a stable world from glance to glance [J].
Burr, D ;
Morrone, MC .
CURRENT BIOLOGY, 2005, 15 (20) :R839-R840
[9]   Eye movements: Keeping vision stable [J].
Burr, D .
CURRENT BIOLOGY, 2004, 14 (05) :R195-R197
[10]  
Chalupa LM, 2003, VISUAL NEUROSCIENCE