Effects of simulated visual acuity and ocular motility impairments on SSVEP brain-computer interface performance: An experiment with Shuffle Speller.

Effects of simulated visual acuity and ocular motility impairments on SSVEP brain-computer interface performance: An experiment with Shuffle Speller.
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模拟视力和眼部运动障碍对 SSVEP 脑机接口性能的影响:使用 Shuffle Speller 进行的实验。

DOI:
10.1080/2326263x.2018.1504662
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发表时间:
2018
期刊:
Brain computer interfaces (Abingdon, England)
影响因子:
--
通讯作者:
Oken,Barry
Oken,Barry
中科院分区:
--
文献类型:
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作者:
Peters,Betts;Higger,Matt;Quivira,Fernando;Bedrick,Steven;Dudy,Shiran;Eddy,Brandon;Kinsella,Michelle;Memmott,Tab;Wiedrick,Jack;Fried-Oken,Melanie;Erdogmus,Deniz;Oken,Barry

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有严重言语和身体障碍的个体可能伴有影响视觉BCI使用的视敏度障碍(VAI)或眼动障碍(OMI)。我们报告使用洗牌拼写器打字界面SSVEP BCI复制拼写与模拟VAI,模拟OMI,和未受损的视力。为了减轻视觉障碍的影响,我们引入了一种方法,自适应地选择用户特定的审判长度,以最大限度地提高预期的信息传输率(ITR),这是密切接近正确的字母选择率。所有参与者都可以在未受损和模拟VAI条件下打字,打字准确性或速度没有显着差异。大多数参与者(37人中的31人)不能在模拟OMI条件下打字;有些人在打字速度较慢的情况下达到了高准确率。在未受损和模拟VAI条件下,报告的工作量和不适感较低,满意度较高。探讨脑机接口使用的视觉障碍的影响和未来的方向进行了讨论。
Individuals with severe speech and physical impairments may have concomitant visual acuity impairments (VAI) or ocular motility impairments (OMI) impacting visual BCI use. We report on use of the Shuffle Speller typing interface for SSVEP BCI copy-spelling with simulated VAI, simulated OMI, and unimpaired vision. To mitigate the effects of visual impairments, we introduce a method that adaptively selects user-specific trial lengths to maximize expected information transfer rate (ITR), which is shown to closely approximate correct letter selection rate. All participants could type under the unimpaired and simulated VAI conditions, without significant differences in typing accuracy or speed. Most participants (31 of 37) could not type under the simulated OMI condition; some achieved high accuracy with slower typing speeds. Reported workload and discomfort were low, and satisfaction high, under the unimpaired and simulated VAI conditions. Implications and future directions for exploration of visual impairment in BCI use are discussed.
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