Cortical oscillatory changes during warming and heating in humans
Cortical oscillatory changes during warming and heating in humans
复制标题
人类变暖和加热过程中皮质振荡的变化
DOI：
10.1016/j.neuroscience.2007.04.055
复制
发表时间：
2007
期刊：
影响因子：
3.3
通讯作者：
J. Mlynár
中科院分区：
文献类型：
--
作者：
A. Stancák;A. Stancák;H. Polácek;J. Vrána;J. Mlynár
温暖和热量由不同类型的皮肤感受器记录。为了解开皮层激活模式的温暖和加热，我们分析了时间分辨率为数百毫秒的脑电图10和20 Hz振荡的时间演变。使用接触式热电极在右大鱼际上施加60个热刺激（从32 ° C到50.5 °C，变化速率6 °C/s）和暖刺激（从32 ° C到42 °C，6 °C/s）。记录了12名健康受试者的111个头皮电极的EEG，并使用事件相关去噪和低分辨率电磁断层成像方法进行了分析。在升温过程中，对侧初级感觉运动（SI/MI）和运动前皮层的10和20 Hz振荡的振幅下降，前扣带回和同侧运动前皮层的20 Hz振荡的振幅增加。加热与SI/MI和运动前皮层10和20 Hz振荡的额外幅度降低相关，并且与起源于后扣带皮层的20 Hz振荡的幅度增加相关。结果表明，在升温和升温过程中，皮层振荡的振幅呈双相变化。SI/MI和运动前皮层10和20 Hz振荡幅度的降低可能有助于在温度达到无法忍受的疼痛时准备运动退缩反应。前扣带皮层，特别是后扣带皮层中20 Hz振荡的同步可能有助于抑制不必要的运动。
Warmth and heat are registered by different types of cutaneous receptors. To disentangle the cortical activation patterns of warming and heating, we analyzed the temporal evolution of the electroencephalographic 10 and 20 Hz oscillations with the time resolution of hundreds of milliseconds. Sixty heat (from 32 to 50.5 °C, rate of change 6 °C/s) and warm (from 32 to 42 °C, 6 °C/s) stimuli were applied on the right thenar using contact thermode. EEG was recorded from 111 scalp electrodes in 12 healthy subjects, and analyzed using event-related desynchronization and low-resolution electromagnetic tomography methods. During warming, the amplitudes of 10 and 20 Hz oscillations over the contralateral primary sensorimotor (SI/MI) and premotor cortices decreased, and the amplitude of 20 Hz oscillations in the anterior cingulate and ipsilateral premotor cortex increased. Heating was associated with additional profound amplitude decreases of 10 and 20 Hz oscillations over SI/MI and premotor cortex, and by amplitude increase of 20 Hz oscillations originating in the posterior cingulate cortex. Results suggest biphasic amplitude changes of the cortical oscillations during ramp increase of temperature attributable to the periods of warming and heating. The amplitude decreases of 10 and 20 Hz oscillations in SI/MI and premotor cortex possibly aid in preparation of motor withdrawal reaction in an event that temperature should reach intolerable pain. Synchronization of the 20 Hz oscillations in the anterior and especially in the posterior cingulate cortex may aid suppression of unwanted movements.
影响因子：
2.5
作者：
Treede, RD;Meyer, RA;Campbell, JN
通讯作者：
Campbell, JN
影响因子：
2.5
作者：
Moulton, EA;Keaser, ML;Greenspan, JD
通讯作者：
Greenspan, JD
影响因子：
2.5
作者：
Craig, AD;Andrew, D
通讯作者：
Andrew, D