brain01 The formation of such patterns of amplitude

http://sulcus.berkeley.edu/wjf/fh%20freemanvitiellolicataejtp2007.pdf
The mesoscopic neural activity of neocortex appears

consisting of the dynamical formation of spatially extended

domains in which widespread cooperation supports

brief epochs of patterned oscillations. These \packets

of waves" have properties of location, size, duration

and carrier frequencies in the beta-gamma range

(12¡80 Hz). They re-synchronize, through a sequence of

repeated collective phase transitions in cortical dynamics,

in frames at frame rates in the theta-alpha range

(3 ¡ 12 Hz). The formation of such patterns of amplitude

modulated (AM) synchronized oscillations in neocortex

has been demonstrated by imaging of scalp potentials

(electroencephalograms, EEGs) and of cortical

surface potentials (electrocorticograms, ECoGs) of animal

and human from high-density electrode arrays [1]-[5].

The AM patterns appear often to extend over spatial domains

covering much of the hemisphere in rabbits and

cats [6, 7], and over the length of a 64 £ 1 linear 19 cm

array [1] in human cortex with near zero phase dispersion

[8, 9]. Synchronized oscillation of large-scale neuronal assemblies

in beta and gamma ranges have been detected

also by magnetoencephalogra¯c (MEG) imaging in the

resting state and in motor task-related states of the human

brain [10]
出现的介观新皮层的神经活动
组成的空间扩展的动力形成
域广泛的合作支持
简要时代的图案的振荡。这些\包
波“的性质，位置，大小，持续时间
和在β-γ的范围内的载波频率
（12¡80赫兹）。他们重新同步，通过一系列的
重复集体相变在皮质动力学，
在帧的帧速率在θ-α的范围
（3¡12赫兹）。形成这样的模式的振幅
调制（AM）在新皮层的同步振荡
已被证实的头皮电位成像
（脑电图，脑电图）和皮质
动物的表面电位（electrocorticograms，ECoGs）
和人类从高密度的电极阵列的[1] - [5]。
AM模式经常出现延长的空间领域
覆盖兔半球中
猫[6，7]的长度超过了64线性19厘米
数组[1]在人类大脑皮层接近零相分散
[8，9]。大型的神经细胞同步振荡
在β和γ的范围已被侦破
也，由magnetoencephalogra¯C（MEG）成像技术在
静息状态和电机与任务相关的国家的人
大脑[10]