Spectral analysis of cerebellar activity after acute brain injury in anesthetized rats
Spectral analysis of cerebellar activity after acute brain injury in anesthetized rats
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DOI：
10.55782/ane-2005-1535
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发表时间：
2005-01-01
影响因子：
1.4
通讯作者：
Kalauzi, A
中科院分区：
文献类型：
--
作者：
Culic, M;Blanusa, LM;Kalauzi, A
我们研究了麻醉大鼠单侧脑损伤前后小脑皮层电活动。小脑活动的频谱分析通过快速傅立叶变换获得。δ频率范围占主导地位，而宽γ范围不超过脑损伤前小脑活动总平均功率谱的5%。在脑损伤后几分钟和最初的90分钟内，总平均功率谱降低，δ范围功率相对降低至约30%，β范围有所增加，γ范围增加至20- 25%。脑损伤后120 min，小脑平均功率谱中γ范围的相对增加仍然存在，而其他变化开始减少。我们认为小脑活动的慢和快（伽马）频率范围内的频谱变化可能是急性损伤后大脑状态的指标。
We investigated cerebellar electrocortical activity before and after unilateral brain injury in anesthetized rats. Spectral analysis of cerebellar activity was obtained by Fast Fourier Transformation. There was a dominance of delta frequency range, while the wide gamma range presented no more than 5% of the total mean power spectra of cerebellar activity before brain injury. A few minutes after brain injury and within the first 90 minutes, there was a decrease of total mean power spectra and a relative decrease of delta range power to about 30%, some increase of beta range, and an increase of gamma range to 20-25%. Relative increase of gamma range in the cerebellar mean power spectra was still present 120 min after the brain injury, while other changes started to diminish. We suggest that spectral changes within slow and fast (gamma) frequency ranges of cerebellar activity may be indicators of the brain state after acute injury.