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[直接电刺激大鼠大脑期间大脑表面的温度分布]

[Temperature distribution on the surface of the rat brain during direct electric stimulation].

作者信息

Tsykalov E N, Kuznetsova G D, Shevelev I A, Budko K P, Gorbach A M

出版信息

Neirofiziologiia. 1987;19(2):216-23.

PMID:3600873
Abstract

Dynamics of spatial temperature distribution over the dorsal surface of the cerebral cortex was studied through the skull with the thermovision technique on immobilized white rats. Direct cortical stimulation revealed local thermoresponses (up to +0.2 degrees C) under electrodes, in the symmetrical point in the opposite hemisphere as well as in some other cortical zones. The response latency was within the limit of 160 ms, peak latency--2-5 s and relaxation time 2-3 min. Nembutal caused depression of thermoresponses, increase in their thresholds, limitation in size as well as slowing down of the development and prolongation in time.

摘要

利用热成像技术,在固定不动的白鼠身上,通过颅骨研究了大脑皮质背表面的空间温度分布动态。直接的皮质刺激显示,在电极下方、对侧半球的对称点以及其他一些皮质区域会出现局部热反应(高达+0.2摄氏度)。反应潜伏期在160毫秒以内,峰值潜伏期为2 - 5秒,弛豫时间为2 - 3分钟。戊巴比妥会导致热反应受到抑制,阈值升高,范围受限,以及反应发展减缓并持续时间延长。

相似文献

1
[Temperature distribution on the surface of the rat brain during direct electric stimulation].[直接电刺激大鼠大脑期间大脑表面的温度分布]
Neirofiziologiia. 1987;19(2):216-23.
2
[Spatial characteristics and the dynamics of the activation foci in the cortex during the elaboration of a conditioned reflex (thermographic research)].[条件反射形成过程中皮层激活灶的空间特征及动态变化(热成像研究)]
Zh Vyssh Nerv Deiat Im I P Pavlova. 1986 Jan-Feb;36(1):74-83.
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[Movement of temperature waves across the cerebral cortex of the white rat].[温度波在白鼠大脑皮层中的移动]
Neirofiziologiia. 1986;18(3):340-6.
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[Dynamic thermomapping of the brain of the rat during sensory stimulation and spreading depression].
Neirofiziologiia. 1986;18(1):26-35.
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[Temperature reactions of the cerebral cortex in the rat and the distant effect of an experimentally evoked excitatory focus].[大鼠大脑皮层的温度反应及实验诱发兴奋灶的远距离效应]
Zh Vyssh Nerv Deiat Im I P Pavlova. 1989 Mar-Apr;39(2):320-8.
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[Parameters of photic stimulation and characteristics of thermoreactions in the cerebral cortex of the white rat].
Neirofiziologiia. 1986;18(3):332-40.
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[Detection of the activation of the motor cortex of the cat during movement of an extremity using thermomapping of the brain].[利用脑温图检测猫在肢体运动过程中运动皮层的激活情况]
Neirofiziologiia. 1986;18(2):266-9.
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[Changes in the oxidation-reduction potential of the rat brain during nembutal anesthesia].
Zh Vyssh Nerv Deiat Im I P Pavlova. 1997 May-Jun;47(3):523-31.
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[Shifts in the steady potential and intracellular concentration of potassium in the cerebral cortex in response to prolonged low-frequency electrical stimulation of the surface of the cortex in the rat].[大鼠大脑皮层表面长时间低频电刺激后大脑皮层中钾离子的稳定电位和细胞内浓度的变化]
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引用本文的文献

1
Temperature reactions of the rat cerebral cortex and distant effects of an experimentally induced excitatory focus.大鼠大脑皮层的温度反应及实验性诱发兴奋灶的远隔效应。
Neurosci Behav Physiol. 1990 Mar-Apr;20(2):167-73. doi: 10.1007/BF01268136.