Real-time decoding of covert attention in higher-order visual areas.
Real-time decoding of covert attention in higher-order visual areas.
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DOI:
10.1016/j.neuroimage.2017.12.019
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发表时间:
2018-04-01
期刊:
影响因子:
5.7
通讯作者:
Rees G
中科院分区:
文献类型:
--
作者:
Ekanayake J;Hutton C;Ridgway G;Scharnowski F;Weiskopf N;Rees G
Brain-computer-interfaces (BCI) provide a means of using human brain activations to control devices for communication. Until now this has only been demonstrated in primary motor and sensory brain regions, using surgical implants or non-invasive neuroimaging techniques. Here, we provide proof-of-principle for the use of higher-order brain regions involved in complex cognitive processes such as attention. Using realtime fMRI, we implemented an online ‘winner-takes-all approach’ with quadrant-specific parameter estimates, to achieve single-block classification of brain activations. These were linked to the covert allocation of attention to real-world images presented at 4-quadrant locations. Accuracies in three target regions were significantly above chance, with individual decoding accuracies reaching upto 70%. By utilising higher order mental processes, ‘cognitive BCIs’ access varied and therefore more versatile information, potentially providing a platform for communication in patients who are unable to speak or move due to brain injury. Proof-of-principle of a ‘cognitive brain-computer-interface’ using realtime fMRI. Higher order visual brain regions used to decode the allocation of attention. Online single-block classification of 4-quadrant spatial attention to realworld images. Brain signal detection made more efficient by using ‘m-sequences’. Higher order mental processes produce more information for communication interfaces.
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DOI:
10.1523/jneurosci.1776-08.2008
发表时间:
2008-10-01
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Bressler SL;Tang W;Sylvester CM;Shulman GL;Corbetta M
通讯作者:
Corbetta M
影响因子:
9.2
作者:
Astrand, Elaine;Wardak, Claire;Ben Hamed, Suliann
通讯作者:
Ben Hamed, Suliann
影响因子:
3.6
作者:
Carlson, Thomas;Hogendoorn, Hinze;Verstraten, Frans A. J.
通讯作者:
Verstraten, Frans A. J.
影响因子:
5.7
作者:
Cichy, Radoslaw Martin;Chen, Yi;Haynes, John-Dylan
通讯作者:
Haynes, John-Dylan
影响因子:
2.7
作者:
Andersson, Patrik;Pluim, Josien P. W.;Ramsey, Nick F.
通讯作者:
Ramsey, Nick F.