南京大学学报(自然科学版) ›› 2022, Vol. 58 ›› Issue (1): 2937.doi: 10.13232/j.cnki.jnju.2022.01.004
Wei Zhang1, Yonghong Zhao2, TaoRong Qiu1()
摘要:
脑机接口(Brain Computer Interface,BCI)作为一种新型的信息沟通与控制手段,是一个涉及神经科学、信号处理以及模式识别等多个学科的交叉研究课题.基于运动想象的BCI系统被认为是最具发展前景的一种脑机接口系统.针对基于机器学习方法构建脑电特征与运动想象之间的映射关系进行分类时,现有方法仍存在无法兼顾脑电信号的时?空域特征并且分类精度难以提高的问题,提出一种基于注意力机制的双向长短时记忆网络(ABiLSTM)和卷积神经网络(Convolutional Neural Network,CNN)的运动想象脑电分析方法,通过ABiLSTM和CNN相结合的方式提取更具表征性的脑电信号深层特征.综合上述研究,最终构建的ABiLSTM?CNN分类模型在公共数据集上取得了90.72%的平均准确率,证明ABiLSTM?CNN运动想象脑电信号分类模型具有很理想的分类性能.
中图分类号:
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