Correlates of figure-ground segregation in fMRI

被引：26
作者：
Skiera, G
Petersen, D
Skalej, M
Fahle, M
机构：
[1] Univ Bremen, D-28211 Bremen, Germany
[2] Univ Tubingen, Dept Neuroradiol, D-72076 Tubingen, Germany
[3] City Univ London, Dept Optometry & Visual Sci, London EC1V 7DD, England
来源：
VISION RESEARCH | 2000年 / 40卷 / 15期
关键词：
functional magnetic resonance imaging; primary visual cortex; bold-response; functional segmentation; visual system;
D O I：
10.1016/S0042-6989(00)00038-9
中图分类号：
Q189 [神经科学];
学科分类号：
071006 ;
摘要：
We investigated which correlates of figure-ground-segregation can be detected by means of functional magnetic resonance imaging (fMRI). Five subjects were scanned with a Siemens Vision 1.5 T system. Motion, colour, and luminance-defined checkerboards were presented with alternating control conditions containing one of the two features of the checkerboard. We find a segregation-specific activation in V1 for all subjects and all stimuli and conclude that neural mechanisms exist as early as in the primary visual cortex that are sensitive to figure-ground segregation. (C) 2000 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：2047 / 2056
页数：10
相关论文
共 21 条
[1]   Similar electrophysiological correlates of texture segregation induced by luminance, orientation, motion and stereo [J].
Bach, M ;
Meigen, T .
VISION RESEARCH, 1997, 37 (11) :1409-1414
[2]   ELECTROPHYSIOLOGICAL CORRELATES OF TEXTURE SEGREGATION IN THE HUMAN VISUAL EVOKED-POTENTIAL [J].
BACH, M ;
MEIGEN, T .
VISION RESEARCH, 1992, 32 (03) :417-424
[3]   PROCESSING STRATEGIES FOR TIME-COURSE DATA SETS IN FUNCTIONAL MRI OF THE HUMAN BRAIN [J].
BANDETTINI, PA ;
JESMANOWICZ, A ;
WONG, EC ;
HYDE, JS .
MAGNETIC RESONANCE IN MEDICINE, 1993, 30 (02) :161-173
[4]   DYNAMIC MAPPING OF THE HUMAN VISUAL-CORTEX BY HIGH-SPEED MAGNETIC-RESONANCE-IMAGING [J].
BLAMIRE, AM ;
OGAWA, S ;
UGURBIL, K ;
ROTHMAN, D ;
MCCARTHY, G ;
ELLERMANN, JM ;
HYDER, F ;
RATTNER, Z ;
SHULMAN, RG .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1992, 89 (22) :11069-11073
[5]   Spatial registration and normalization of images [J].
Friston, KJ ;
Ashburner, J ;
Frith, CD ;
Poline, JB ;
Heather, JD ;
Frackowiak, RSJ .
HUMAN BRAIN MAPPING, 1995, 3 (03) :165-189
[6]   DYNAMIC MAGNETIC-RESONANCE-IMAGING OF HUMAN BRAIN ACTIVITY DURING PRIMARY SENSORY STIMULATION [J].
KWONG, KK ;
BELLIVEAU, JW ;
CHESLER, DA ;
GOLDBERG, IE ;
WEISSKOFF, RM ;
PONCELET, BP ;
KENNEDY, DN ;
HOPPEL, BE ;
COHEN, MS ;
TURNER, R ;
CHENG, HM ;
BRADY, TJ ;
ROSEN, BR .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 1992, 89 (12) :5675-5679
[7]   CONTOUR FROM MOTION PROCESSING OCCURS IN PRIMARY VISUAL-CORTEX [J].
LAMME, VAF ;
VANDIJK, BW ;
SPEKREIJSE, H .
NATURE, 1993, 363 (6429) :541-543
[8]   ORGANIZATION OF TEXTURE SEGREGATION PROCESSING IN PRIMATE VISUAL-CORTEX [J].
LAMME, VAF ;
VANDIJK, BW ;
SPEKREIJSE, H .
VISUAL NEUROSCIENCE, 1993, 10 (05) :781-790
[9]  
LAMME VAF, 1995, J NEUROSCI, V15, P1605
[10]   A BAYESIAN FRAMEWORK FOR UNDERSTANDING TEXTURE SEGMENTATION IN THE PRIMARY VISUAL-CORTEX [J].
LEE, TS .
VISION RESEARCH, 1995, 35 (18) :2643-2657
123