On-task theta power is correlated to motor imagery performance

被引:0
|
作者
Trambaiolli, Lucas R. [1 ,2 ]
Dean, Philip J. A. [3 ]
Cravo, Andre M. [1 ]
Sterr, Annette [3 ]
Sato, Joao R. [1 ]
机构
[1] Fed Univ ABC, Ctr Math Computat & Cognit, BR-09606070 Sao Bernardo Do Campo, Brazil
[2] Harvard Med Sch, McLean Hosp, Div Basic Neurosci, Boston, MA 02478 USA
[3] Univ Surrey, Sch Psychol, Guildford GU2 7XH, Surrey, England
关键词
BRAIN-COMPUTER INTERFACE; MEMORY LOAD; SYNCHRONIZATION; DESYNCHRONIZATION; ADAPTATION; DYNAMICS; RHYTHMS;
D O I
暂无
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
This study aimed to evaluate on-task electroencephalographic spectral measures and its correlation to performance during a motor imagery (MI) task. By investigating this aspect, we hope to understand what makes some individuals MI "illiterates". Eighteen healthy subjects performed an experimental task whereby a cursor was moved to one of two targets (left and right) using only MI of the left and right hands. To evaluate the effect of aptitude, performance was measured as percentage of correct movement to target, and Mahalanobis distances were calculated between whole-scalp spectral patterns during left and right motor imagery. Then the correlation between performance and Mahalanobis distance was investigated for central, and whole-head topographies using Spearman's correlations. In central topographies, distances on alpha band were positively correlated with performance (p=0.562, p=0.032), while distances on theta band were negatively correlated to performance (p=-0.648, p=0.018) in whole-head maps. The investigation of on-task whole-scalp differences allows a holistic comprehension of the neural basis of motor imagery, as well as how this leads to performance variations.
引用
收藏
页码:3937 / 3942
页数:6
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