Stochastic resonance in evoked magnetoencephalogram investigated by analysis of coherences.
Stochastic resonance in evoked magnetoencephalogram investigated by analysis of coherences.
复制标题
通过相干性分析研究诱发脑磁图中的随机共振。
DOI：
10.1109/tmag.2012.2200458
复制
发表时间：
2012
影响因子：
2.1
通讯作者：
K. Tanaka
中科院分区：
文献类型：
--
作者：
Hattori;M.;K. Tanaka
我们检测了脑磁图上的相位相干性和听觉稳态反应（ASSRs）的功率，以持续的正弦振幅调制音调呈现在受试者的一只耳朵上，而不同强度的白噪声则呈现在另一只耳朵上。我们还检查了左右听觉颞区assr之间一致性的实部和虚部。对侧颞区ASSR的相位相干性和功率以及左右相干实部均存在随机共振（SR）。结果表明，SR现象发生在中枢神经系统而非外周神经系统，可能不是左右听觉皮层相互作用的结果。
We examined the phase coherence and power of auditory steady state responses (ASSRs) in magnetoencephalogram to an ongoing sinusoially amplitude modulated tone presented to the subject's one ear while bursts of white noise of various intensities were presented to the opposite ear. We also examined the real and imaginary parts of coherence between the ASSRs of the right and left auditory temporal regions. Stochastic resonance (SR) was seen in the phase coherence and power of the ASSR from the contralateral temporal area and in the real part of the right-left coherence. The results showed that the SR phenomenon occurred not in the periphery but in the central nervous system and suggested that it was not probably due to the interaction between the left and right auditory cortex.