Spatial Alignment of Scalp EEG Activity during Cognitive Tasks

被引：0
作者：
Myers, Mark H. [1 ]
Joure, Charlotte A. [2 ]
Johnston, Carley [2 ]
Canales, Aaron [2 ]
Padmanabha, Akshay [2 ]
Kozma, Robert [1 ]
机构：
[1] Univ Memphis, Memphis, TN 38152 USA
[2] Univ Memphis, Ctr Large Scale Integrated Optimizat & Networks, Memphis, TN 38152 USA
来源：
2013 INTERNATIONAL JOINT CONFERENCE ON NEURAL NETWORKS (IJCNN) | 2013年
关键词：
EEG; Phase Propagation; Phase Velocity; Spatial Pattern Classification; Cognitive Activity; PHASE; PATTERNS;
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Electrocorticogram (ECoG) analysis of human subjects demonstrated that beta-gamma oscillations carry perceptual information in spatial patterns across the cortex when the subjects were engaged in task-oriented activities. A hypothesis was tested that similar patterns could be found in the scalp EEG of human subjects during visual stimulation. Signals were continuously recorded from scalp electrodes and band-pass filtered. The Fast Fourier transform provides the phase, which is used to obtain directional phase information relating to cognitive tasks. Spatial patterns of EEG phase modulation were identified and classified with respect to stimulus. The obtained results suggest that the scalp EEG can yield information about the timing of episodically synchronized brain activity in higher cognitive function, so as to support mechanisms of brain-computer interfacing.
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页数：8
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