Key Laboratory of Biomedical Information Engineering of Ministry of Education, the School of Life Science and Technology, Institute of Health and Rehabilitation Science, Xi'an Jiaotong University, Xi'an 710049, China.
School of Rehabilitation Science and Engineering, University of Health and Rehabilitation Sciences, Qingdao 266071, China.
J Pharmacol Toxicol Methods. 2024 Sep-Oct;129:107551. doi: 10.1016/j.vascn.2024.107551. Epub 2024 Sep 7.
This paper introduces an efficient methodology for conducting rat anesthesia experiments, aimed at enhancing the quality of raw brain signals obtained. The proposed approach enables the acquisition of animal brain signals during experiments without the confounding influence of muscle noise. Initially, the use of alpha-chloralose (a-c) in conjunction with Isoflurane is introduced to induce anesthesia in rats. Subsequently, Dexdomitor is administered to prevent muscular movements during the collection of brain signals, further refining the signal quality. Experimental outcomes conclusively demonstrate that our anesthesia method produces cleaner raw signals and exhibits improved robustness during data acquisition, outperforming existing methods that rely solely on Isoflurane or the Ketamine-Xylazine combination. Notably, this improved performance is achieved with minimal alterations to vital physiological parameters, including body temperature, respiration, and heart rates. Moreover, the efficacy of a-c in maintaining anesthesia for up to 7 h stands in contrast to the shorter durations achievable with continuous Isoflurane administration or the 30-min window offered by Ketamine-Xylazine, highlighting the practical advantages of our proposed method. Finally, post-experiment observations confirmed that the animals gradually returned to normal behavior without any signs of distress or adverse effects, indicating that our method was both effective and safe.
本文介绍了一种高效的大鼠麻醉实验方法,旨在提高原始脑信号的质量。该方法可在实验过程中获取动物的脑信号,而不会受到肌肉噪声的干扰。首先,使用α-氯醛(a-c)与异氟烷联合诱导大鼠麻醉。然后,给予地托咪定以防止在收集脑信号时发生肌肉运动,进一步优化信号质量。实验结果表明,我们的麻醉方法产生的原始信号更干净,在数据采集过程中具有更高的鲁棒性,优于仅依赖异氟烷或氯胺酮-甲苯噻嗪组合的现有方法。值得注意的是,这种性能的提高是在对包括体温、呼吸和心率在内的重要生理参数的最小改变下实现的。此外,a-c 维持麻醉长达 7 小时的效果与连续异氟烷给药的较短持续时间或氯胺酮-甲苯噻嗪提供的 30 分钟窗口形成对比,突出了我们提出的方法的实际优势。最后,实验后的观察证实,动物逐渐恢复正常行为,没有任何不适或不良反应的迹象,表明我们的方法既有效又安全。