Effects of autonomic nervous system on functional neuroimaging: analyses based on the vector autoregressive model
Effects of autonomic nervous system on functional neuroimaging: analyses based on the vector autoregressive model
复制标题
自主神经系统对功能神经影像的影响：基于向量自回归模型的分析
DOI：
10.1007/978-1-4614-1566-4_12
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Seki J.
中科院分区：
文献类型：
--
作者：
Seiyama A.;Sasaki Y.;Takatsuki A.;Seki J.
我们进行了功能性近红外光谱（fNIRS），呼吸频率（RR）使用二氧化碳监测仪，脉搏率（PR）使用脉搏血氧仪在25毫秒的采样间隔的同时测量。健康志愿者同时接受心理任务（志愿者用倒置的鼠标跟踪PC显示器上显示的图片）和生理任务（他们的右手手指浸入冰冷的水中）。所得数据采用三组分自回归（AR）模型进行分析。在心理任务中，PR对fNIRS信号（氧合血红蛋白; oxygenated Hb; oxy-Hb）的贡献<15%，RR <10%;而在生理任务中，PR对fNIRS信号的贡献<20%，RR <5%。基于上述结果，我们将讨论自主神经系统对fNIRS功能神经成像的影响。
We performed simultaneous measurements of functional near-infrared spectroscopy (fNIRS), respiratory rate (RR) using a CO2monitor, and pulse rate (PR) using a pulse oxymeter at 25-ms sampling intervals. Healthy volunteers were subjected to both mental task (volunteers traced a picture shown on a PC monitor with an inverted mouse) and physiological task (their right fingers were immersed into the ice-cold water). Obtained data were analyzed using the three components auto-regressive (AR) model. During the mental task, contribution of PR to fNIRS signal (oxygenated hemoglobin; oxy-Hb) was <15% and that of RR was <10%, while during the physiological task, contribution of PR to fNIRS signal was <20% and that of RR was <5%. Based on the above results, we will discuss the effects of the autonomic nervous system on functional neuroimaging using fNIRS.