DocumentCode :
2486881
Title :
Eye fixation related potentials in a target search task
Author :
Healy, Graham ; Smeaton, Alan F.
Author_Institution :
Sch. of Comput., Dublin City Univ., Dublin, Ireland
fYear :
2011
fDate :
Aug. 30 2011-Sept. 3 2011
Firstpage :
4203
Lastpage :
4206
Abstract :
Typically BCI (Brain Computer Interfaces) are found in rehabilitative or restorative applications, often allowing users a medium of communication that is otherwise unavailable through conventional means. Recently, however, there is growing interest in using BCI to assist users in searching for images. A class of neural signals often leveraged in common BCI paradigms are ERPs (Event Related Potentials), which are present in the EEG (Electroencephalograph) signals from users in response to various sensory events. One such ERP is the P300, and is typically elicited in an oddball experiment where a subject´s attention is orientated towards a deviant stimulus among a stream of presented images. It has been shown that these types of neural responses can be used to drive an image search or labeling task, where we can rank images by examining the presence of such ERP signals in response to the display of images. To date, systems like these have been demonstrated when presenting sequences of images containing targets at up to 10Hz, however, the target images in these tasks do not necessitate any kind of eye movement for their detection because the targets in the images are quite salient. In this paper we analyse the presence of discriminating EEG signals when they are offset to the time of eye fixations in a visual search task where detection of target images does require eye fixations.
Keywords :
biomechanics; brain-computer interfaces; electroencephalography; eye; medical computing; visual perception; EEG signals; brain computer interfaces; electroencephalograph signals; event related potentials; eye fixation related potentials; eye movement; labeling task; neural responses; neural signals; target search task; visual search task; Electroencephalography; Electrooculography; Object detection; Scalp; Support vector machines; Vectors; Visualization; Artificial Intelligence; Electroencephalography; Evoked Potentials; Fixation, Ocular; Humans;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, EMBC, 2011 Annual International Conference of the IEEE
Conference_Location :
Boston, MA
ISSN :
1557-170X
Print_ISBN :
978-1-4244-4121-1
Electronic_ISBN :
1557-170X
Type :
conf
DOI :
10.1109/IEMBS.2011.6091043
Filename :
6091043
Link To Document :
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