The Behavioral significance of spontaneous fluctuations in brain activity

被引:22
作者
Birn, Rasmus M. [1 ]
机构
[1] NIMH, NIH, Lab Brain & Cognit, Bethesda, MD 20892 USA
关键词
CORTEX; MODES; FMRI;
D O I
10.1016/j.neuron.2007.09.021
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
Low-frequency fluctuations in fMRI data are believed to reflect synchronous and spontaneous fluctuations in neuronal networks. A study by Fox et al. in this issue of Neuron shows that these spontaneous fluctuations in the motor cortex can account for significant trial-to-trial variations in both the fMRI response and behavior.
引用
收藏
页码:8 / 9
页数:2
相关论文
共 11 条
[1]   Cardiac-induced physiologic noise in tissue is a direct observation of cardiac-induced fluctuations [J].
Bhattacharyya, PK ;
Lowe, MJ .
MAGNETIC RESONANCE IMAGING, 2004, 22 (01) :9-13
[2]   Separating respiratory-variation-related neuronal-activity-related fluctuations in fluctuations from fMRI [J].
Birn, RM ;
Diamond, JB ;
Smith, MA ;
Bandettini, PA .
NEUROIMAGE, 2006, 31 (04) :1536-1548
[3]   FUNCTIONAL CONNECTIVITY IN THE MOTOR CORTEX OF RESTING HUMAN BRAIN USING ECHO-PLANAR MRI [J].
BISWAL, B ;
YETKIN, FZ ;
HAUGHTON, VM ;
HYDE, JS .
MAGNETIC RESONANCE IN MEDICINE, 1995, 34 (04) :537-541
[4]   fMRI resting state networks define distinct modes of long-distance interactions in the human brain [J].
De Luca, M ;
Beckmann, CF ;
De Stefano, N ;
Matthews, PM ;
Smith, SM .
NEUROIMAGE, 2006, 29 (04) :1359-1367
[5]   Coherent spontaneous activity accounts for trial-to-trial variability in human evoked brain responses [J].
Fox, MD ;
Snyder, AZ ;
Zacks, JM ;
Raichle, ME .
NATURE NEUROSCIENCE, 2006, 9 (01) :23-25
[6]   Spontaneous fluctuations in brain activity observed with functional magnetic resonance imaging [J].
Fox, Michael D. ;
Raichle, Marcus E. .
NATURE REVIEWS NEUROSCIENCE, 2007, 8 (09) :700-711
[7]   Electroencephalographic signatures of attentional and cognitive default modes in spontaneous brain activity fluctuations at rest [J].
Laufs, H ;
Krakow, K ;
Sterzer, P ;
Eger, E ;
Beyerle, A ;
Salek-Haddadi, A ;
Kleinschmidt, A .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2003, 100 (19) :11053-11058
[8]   Very slow activity fluctuations in monkey visual cortex: Implications for functional brain imaging [J].
Leopold, DA ;
Murayama, Y ;
Logothetis, NK .
CEREBRAL CORTEX, 2003, 13 (04) :422-433
[9]   Wandering minds: The default network and stimulus-independent thought [J].
Mason, Malia F. ;
Norton, Michael I. ;
Van Horn, John D. ;
Wegner, Daniel M. ;
Grafton, Scott T. ;
Macrae, C. Neil .
SCIENCE, 2007, 315 (5810) :393-395
[10]   A default mode of brain function [J].
Raichle, ME ;
MacLeod, AM ;
Snyder, AZ ;
Powers, WJ ;
Gusnard, DA ;
Shulman, GL .
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2001, 98 (02) :676-682