An independent brain-computer interface based on covert shifts of non-spatial visual attention.
Standard
An independent brain-computer interface based on covert shifts of non-spatial visual attention. / Zhang, Dan; Gao, Xiaorong; Gao, Shangkai; Engel, Andreas K.; Maye, Alexander.
In: Conf Proc IEEE Eng Med Biol Soc, Vol. 1, 2009, p. 539-542.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
Harvard
APA
Vancouver
Bibtex
}
RIS
TY - JOUR
T1 - An independent brain-computer interface based on covert shifts of non-spatial visual attention.
AU - Zhang, Dan
AU - Gao, Xiaorong
AU - Gao, Shangkai
AU - Engel, Andreas K.
AU - Maye, Alexander
PY - 2009
Y1 - 2009
N2 - Modulation of steady-state visual evoked potential (SSVEP) by directing gaze to targets flickering at different frequencies has been utilized in many brain-computer interface (BCI) studies. However, this paradigm may not work with patients suffering from complete locked-in syndrome or other severe motor disabilities that do not allow conscious control of gaze direction. In this paper, we present a novel, independent BCI paradigm based on covert shift of non-spatial visual selective attention. Subjects viewed a display consisting of two spatially overlapping sets of randomly positioned dots. The two dot sets differed in color, motion and flickering frequency. Two types of motion, rotation and linear motion, were investigated. Both, the SSVEP amplitude and phase response were modulated by selectively attending to one of the two dot sets. Offline analysis revealed a predicted online classification accuracy of 69.3+/-10.2% for the rotating dots, and 80.7+/-10.4% for the linearly moving dots.
AB - Modulation of steady-state visual evoked potential (SSVEP) by directing gaze to targets flickering at different frequencies has been utilized in many brain-computer interface (BCI) studies. However, this paradigm may not work with patients suffering from complete locked-in syndrome or other severe motor disabilities that do not allow conscious control of gaze direction. In this paper, we present a novel, independent BCI paradigm based on covert shift of non-spatial visual selective attention. Subjects viewed a display consisting of two spatially overlapping sets of randomly positioned dots. The two dot sets differed in color, motion and flickering frequency. Two types of motion, rotation and linear motion, were investigated. Both, the SSVEP amplitude and phase response were modulated by selectively attending to one of the two dot sets. Offline analysis revealed a predicted online classification accuracy of 69.3+/-10.2% for the rotating dots, and 80.7+/-10.4% for the linearly moving dots.
M3 - SCORING: Zeitschriftenaufsatz
VL - 1
SP - 539
EP - 542
ER -
