Distinct patterns of spatial attentional modulation of steady‐state visual evoked magnetic fields (SSVEFs) in subdivisions of the human early visual cortex.
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| Title: | Distinct patterns of spatial attentional modulation of steady‐state visual evoked magnetic fields (SSVEFs) in subdivisions of the human early visual cortex. |
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| Authors: | Moratti, Stephan (AUTHOR), Gundlach, Christopher (AUTHOR), de Echegaray, Javier (AUTHOR), Müller, Matthias M. (AUTHOR) |
| Source: | Psychophysiology. Feb2024, Vol. 61 Issue 2, p1-16. 16p. |
| Subjects: | Visual cortex, Visual evoked response, Visual evoked potentials, Magnetic fields, Brain-computer interfaces |
| Abstract: | In recent years, steady‐state visual evoked potentials (SSVEPs) became an increasingly valuable tool to investigate neural dynamics of competitive attentional interactions and brain–computer interfaces. This is due to their good signal‐to‐noise ratio, allowing for single‐trial analysis, and their ongoing oscillating nature that enables to analyze temporal dynamics of facilitation and suppression. Given the popularity of SSVEPs, it is surprising that only a few studies looked at the cortical sources of these responses. This is in particular the case when searching for studies that assessed the cortical sources of attentional SSVEP amplitude modulations. To address this issue, we used a typical spatial attention task and recorded neuromagnetic fields (MEG) while presenting frequency‐tagged stimuli in the left and right visual fields, respectively. Importantly, we controlled for attentional deployment in a baseline period before the shifting cue. Subjects either attended to a central fixation cross or to two peripheral stimuli simultaneously. Results clearly showed that signal sources and attention effects were restricted to the early visual cortex: V1, V2, hMT+, precuneus, occipital‐parietal, and inferior‐temporal cortex. When subjects attended to central fixation first, shifting attention to one of the peripheral stimuli resulted in a significant activation increase for the to‐be‐attended stimulus with no activation decrease for the to‐be‐ignored stimulus in hMT+ and inferio‐temporal cortex, but significant SSVEF decreases from V1 to occipito‐parietal cortex. When attention was first deployed to both rings, shifting attention away from one ring basically resulted in a significant activation decrease in all areas for the then‐to‐be‐ignored stimulus. Although the cortical generators of steady‐state visual evoked responses as recorded by EEG or MEG (SSVEPs or SSVEFs, respectively) have been described in humans, how these generators are involved in the modulation of these evoked oscillatory responses by spatial attention is less known. Here, we describe how distinct sub‐divisions of the early human visual cortex contribute differently to the modulation of SSVEFs by spatial attention. [ABSTRACT FROM AUTHOR] |
| Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Psychology and Behavioral Sciences Collection |
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| Header | DbId: pbh DbLabel: Psychology and Behavioral Sciences Collection An: 174846295 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Distinct patterns of spatial attentional modulation of steady‐state visual evoked magnetic fields (SSVEFs) in subdivisions of the human early visual cortex. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Moratti%2C+Stephan%22">Moratti, Stephan</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Gundlach%2C+Christopher%22">Gundlach, Christopher</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22de+Echegaray%2C+Javier%22">de Echegaray, Javier</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Müller%2C+Matthias+M%2E%22">Müller, Matthias M.</searchLink> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Psychophysiology%22">Psychophysiology</searchLink>. Feb2024, Vol. 61 Issue 2, p1-16. 16p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Visual+cortex%22">Visual cortex</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+evoked+response%22">Visual evoked response</searchLink><br /><searchLink fieldCode="DE" term="%22Visual+evoked+potentials%22">Visual evoked potentials</searchLink><br /><searchLink fieldCode="DE" term="%22Magnetic+fields%22">Magnetic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Brain-computer+interfaces%22">Brain-computer interfaces</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: In recent years, steady‐state visual evoked potentials (SSVEPs) became an increasingly valuable tool to investigate neural dynamics of competitive attentional interactions and brain–computer interfaces. This is due to their good signal‐to‐noise ratio, allowing for single‐trial analysis, and their ongoing oscillating nature that enables to analyze temporal dynamics of facilitation and suppression. Given the popularity of SSVEPs, it is surprising that only a few studies looked at the cortical sources of these responses. This is in particular the case when searching for studies that assessed the cortical sources of attentional SSVEP amplitude modulations. To address this issue, we used a typical spatial attention task and recorded neuromagnetic fields (MEG) while presenting frequency‐tagged stimuli in the left and right visual fields, respectively. Importantly, we controlled for attentional deployment in a baseline period before the shifting cue. Subjects either attended to a central fixation cross or to two peripheral stimuli simultaneously. Results clearly showed that signal sources and attention effects were restricted to the early visual cortex: V1, V2, hMT+, precuneus, occipital‐parietal, and inferior‐temporal cortex. When subjects attended to central fixation first, shifting attention to one of the peripheral stimuli resulted in a significant activation increase for the to‐be‐attended stimulus with no activation decrease for the to‐be‐ignored stimulus in hMT+ and inferio‐temporal cortex, but significant SSVEF decreases from V1 to occipito‐parietal cortex. When attention was first deployed to both rings, shifting attention away from one ring basically resulted in a significant activation decrease in all areas for the then‐to‐be‐ignored stimulus. Although the cortical generators of steady‐state visual evoked responses as recorded by EEG or MEG (SSVEPs or SSVEFs, respectively) have been described in humans, how these generators are involved in the modulation of these evoked oscillatory responses by spatial attention is less known. Here, we describe how distinct sub‐divisions of the early human visual cortex contribute differently to the modulation of SSVEFs by spatial attention. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Psychophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1111/psyp.14452 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 16 StartPage: 1 Subjects: – SubjectFull: Visual cortex Type: general – SubjectFull: Visual evoked response Type: general – SubjectFull: Visual evoked potentials Type: general – SubjectFull: Magnetic fields Type: general – SubjectFull: Brain-computer interfaces Type: general Titles: – TitleFull: Distinct patterns of spatial attentional modulation of steady‐state visual evoked magnetic fields (SSVEFs) in subdivisions of the human early visual cortex. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Moratti, Stephan – PersonEntity: Name: NameFull: Gundlach, Christopher – PersonEntity: Name: NameFull: de Echegaray, Javier – PersonEntity: Name: NameFull: Müller, Matthias M. IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2024 Type: published Y: 2024 Identifiers: – Type: issn-print Value: 00485772 Numbering: – Type: volume Value: 61 – Type: issue Value: 2 Titles: – TitleFull: Psychophysiology Type: main |
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