The Effects of Different Phase on Independent Visual Fields SSVEP Responses
Binocular disparate stimulation based on steady-state visual evoked potentials (SSVEP) generates more recognizable features but also introduces complexity hardening the interpretability of SSVEP responses. The individual contribution of each visual pathway when stimulating parts of the visual field...
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| Format: | Article |
| Language: | English |
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IEEE
2025-01-01
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| Series: | IEEE Transactions on Neural Systems and Rehabilitation Engineering |
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| Online Access: | https://ieeexplore.ieee.org/document/10838597/ |
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| author | Dalu Zheng Songyun Xie Xinzhou Xie Michael Scholz Hao Tang |
| author_facet | Dalu Zheng Songyun Xie Xinzhou Xie Michael Scholz Hao Tang |
| author_sort | Dalu Zheng |
| collection | DOAJ |
| description | Binocular disparate stimulation based on steady-state visual evoked potentials (SSVEP) generates more recognizable features but also introduces complexity hardening the interpretability of SSVEP responses. The individual contribution of each visual pathway when stimulating parts of the visual field remains unclear and is further obfuscated by the large spatial integration of EEG systems. We propose “independent visual field stimulation” (IVFS), utilizing a head-mounted display (HMD) as a novel experimental paradigm to improve the interpretability of SSVEP responses. By stimulating only half of the visual field and “coding” the stimulus further with different phases individual contributions of pathways and eyes can be easily separated and thus the mode of action becomes clearer. In a first proof-of-principles study on 15 subjects we demonstrate that IVFS with a 180° phase difference causes left and right scalp SSVEPs to exhibit a similar phase difference, and the propagation mechanism of SSVEPs conforms to the standing wave mode. Stimulating ipsilateral or contralateral pathways individually does influence temporal information processing but not SSVEP amplitudes. Utilizing the phase of the stimulus in addition to its frequency creates a new dimension and thus helps significantly to overcome frequency limitations in SSVEP research which otherwise dramatically hinder the read-out due to the prominent lowpass nature of the human head. |
| format | Article |
| id | doaj-art-57d7f6cb6cb84ffab5c07fc700eaa291 |
| institution | Kabale University |
| issn | 1534-4320 1558-0210 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Transactions on Neural Systems and Rehabilitation Engineering |
| spelling | doaj-art-57d7f6cb6cb84ffab5c07fc700eaa2912025-01-30T00:00:05ZengIEEEIEEE Transactions on Neural Systems and Rehabilitation Engineering1534-43201558-02102025-01-013357758610.1109/TNSRE.2025.352888410838597The Effects of Different Phase on Independent Visual Fields SSVEP ResponsesDalu Zheng0https://orcid.org/0009-0007-7251-1714Songyun Xie1https://orcid.org/0000-0002-8774-7291Xinzhou Xie2https://orcid.org/0000-0001-9294-5885Michael Scholz3https://orcid.org/0009-0008-5703-5008Hao Tang4https://orcid.org/0000-0002-4091-5737School of Electronic and Information Engineering, Northwestern Polytechnical University, Xi’an, ChinaSchool of Electronic and Information Engineering, Northwestern Polytechnical University, Xi’an, ChinaSchool of Electronic and Information Engineering, Northwestern Polytechnical University, Xi’an, ChinaFaculty of Electrical Engineering and Computer Science, Technical University Berlin, Berlin, GermanySchool of Electronic and Information Engineering, Northwestern Polytechnical University, Xi’an, ChinaBinocular disparate stimulation based on steady-state visual evoked potentials (SSVEP) generates more recognizable features but also introduces complexity hardening the interpretability of SSVEP responses. The individual contribution of each visual pathway when stimulating parts of the visual field remains unclear and is further obfuscated by the large spatial integration of EEG systems. We propose “independent visual field stimulation” (IVFS), utilizing a head-mounted display (HMD) as a novel experimental paradigm to improve the interpretability of SSVEP responses. By stimulating only half of the visual field and “coding” the stimulus further with different phases individual contributions of pathways and eyes can be easily separated and thus the mode of action becomes clearer. In a first proof-of-principles study on 15 subjects we demonstrate that IVFS with a 180° phase difference causes left and right scalp SSVEPs to exhibit a similar phase difference, and the propagation mechanism of SSVEPs conforms to the standing wave mode. Stimulating ipsilateral or contralateral pathways individually does influence temporal information processing but not SSVEP amplitudes. Utilizing the phase of the stimulus in addition to its frequency creates a new dimension and thus helps significantly to overcome frequency limitations in SSVEP research which otherwise dramatically hinder the read-out due to the prominent lowpass nature of the human head.https://ieeexplore.ieee.org/document/10838597/Brain-computer interfacesteady-state visual evoked potentialsindependent visual fieldsvisual pathwaySSVEP transduction mechanism |
| spellingShingle | Dalu Zheng Songyun Xie Xinzhou Xie Michael Scholz Hao Tang The Effects of Different Phase on Independent Visual Fields SSVEP Responses IEEE Transactions on Neural Systems and Rehabilitation Engineering Brain-computer interface steady-state visual evoked potentials independent visual fields visual pathway SSVEP transduction mechanism |
| title | The Effects of Different Phase on Independent Visual Fields SSVEP Responses |
| title_full | The Effects of Different Phase on Independent Visual Fields SSVEP Responses |
| title_fullStr | The Effects of Different Phase on Independent Visual Fields SSVEP Responses |
| title_full_unstemmed | The Effects of Different Phase on Independent Visual Fields SSVEP Responses |
| title_short | The Effects of Different Phase on Independent Visual Fields SSVEP Responses |
| title_sort | effects of different phase on independent visual fields ssvep responses |
| topic | Brain-computer interface steady-state visual evoked potentials independent visual fields visual pathway SSVEP transduction mechanism |
| url | https://ieeexplore.ieee.org/document/10838597/ |
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