RELATION OF OLFACTORY EEG TO BEHAVIOR - TIME-SERIES ANALYSIS
RELATION OF OLFACTORY EEG TO BEHAVIOR - TIME-SERIES ANALYSIS
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DOI：
10.1037/0735-7044.100.5.753
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发表时间：
1986-10-01
影响因子：
1.9
通讯作者：
DIPRISCO, GV
中科院分区：
文献类型：
--
作者：
FREEMAN, WJ;DIPRISCO, GV
在家兔嗅球上植入64个电极，测量振荡性脑电爆发。振荡爆发之前和期间发生的气味条件刺激（CS）的介绍选择在简短的片段。64个记录道和它们的频谱之间的比较表明，尽管通道之间存在幅度差异，但在整个阵列上，每个突发都有一个共同的波形。光谱在每个爆发中显示2至5个不同的峰。每条迹线用5个余弦之和拟合，以10个8× 8矩阵的振幅和相位值表示其峰值频率处的爆发。确定了两种类型的爆裂。那些与主频率大于55赫兹有一个狭窄的主导频谱峰和可重复的空间模式，其幅度内的子组的突发控制和气味CS条件。那些主导频率小于55赫兹是无序的，他们的频谱是广泛的，和他们的空间模式的振幅没有复制内分组。一项行为分析表明，高频率而不是低频率的爆发包含气味特异性信息。
Oscillatory electroencephalographic bursts were measured from 64 electrodes implanted on the olfactory bulbs of rabbits. Oscillatory bursts that occurred before and during presentation of odorant conditioned stimuli (CSs) were selected in brief segments. Comparisons between the 64 traces and their spectra showed that, despite amplitude differences between channels, every burst had a common waveform over the entire array. The spectra showed 2 to 5 distinct peaks in each burst. Each trace was fitted with the sum of 5 cosines to express the burst in ten 8× 8 matrices of amplitude and phase values at its peak frequencies. Two types of burst were identified. Those with dominant frequencies greater than 55 Hz had one narrow dominant spectral peak and reproducible spatial patterns of its amplitude within subgroups of bursts relating to control and odorant CS conditions. Those with dominant frequencies less than 55 Hz were disorderly; their spectra were broad, and their spatial patterns of amplitude did not reproduce within subgroups. A behavioral assay showed that the high-and not the low-frequency bursts contained odorspecific information.