Tactile imagery affects cortical responses to vibrotactile stimulation of the fingertip
Mental imagery is a crucial cognitive process, yet its underlying neural mechanisms remain less understood compared to perception. Furthermore, within the realm of mental imagery, the somatosensory domain is particularly underexplored compared to other sensory modalities. This study aims to investig...
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Elsevier
2024-12-01
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024168387 |
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| author | Marina Morozova Lev Yakovlev Nikolay Syrov Mikhail Lebedev Alexander Kaplan |
| author_facet | Marina Morozova Lev Yakovlev Nikolay Syrov Mikhail Lebedev Alexander Kaplan |
| author_sort | Marina Morozova |
| collection | DOAJ |
| description | Mental imagery is a crucial cognitive process, yet its underlying neural mechanisms remain less understood compared to perception. Furthermore, within the realm of mental imagery, the somatosensory domain is particularly underexplored compared to other sensory modalities. This study aims to investigate the influence of tactile imagery (TI) on cortical somatosensory processing. We explored the cortical manifestations of TI by recording EEG activity in healthy human subjects. We investigated event-related somatosensory oscillatory dynamics during TI compared to actual tactile stimulation, as well as somatosensory evoked potentials (SEPs) in response to short vibrational stimuli, examining their amplitude-temporal characteristics and spatial distribution across the scalp. EEG activity exhibited significant changes during TI compared to the no-imagery baseline. TI caused event-related desynchronization (ERD) of the contralateral μ-rhythm, with a notable correlation between ERD during imagery and real stimulation across subjects. TI also modulated several SEP components in sensorimotor and frontal areas, showing increases in the contralateral P100 and P300, contra- and ipsilateral P300, frontal P200, and parietal P600 components. The results clearly indicate that TI affects cortical processing of somatosensory stimuli, impacting EEG responses in various cortical areas. The assessment of SEPs in EEG could serve as a versatile marker of tactile imagery in practical applications. We propose incorporating TI in imagery-based brain-computer interfaces (BCIs) to enhance sensorimotor restoration and sensory substitution. This approach underscores the importance of somatosensory mental imagery in cognitive neuroscience and its potential applications in neurorehabilitation and assistive technologies. |
| format | Article |
| id | doaj-art-5f92e94edf164d3ab9ad9e9c0f282d52 |
| institution | DOAJ |
| issn | 2405-8440 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
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| spelling | doaj-art-5f92e94edf164d3ab9ad9e9c0f282d522025-08-20T02:49:50ZengElsevierHeliyon2405-84402024-12-011023e4080710.1016/j.heliyon.2024.e40807Tactile imagery affects cortical responses to vibrotactile stimulation of the fingertipMarina Morozova0Lev Yakovlev1Nikolay Syrov2Mikhail Lebedev3Alexander Kaplan4Vladimir Zelman Center for Neurobiology and Brain Rehabilitation, Skolkovo Institute of Science and Technology, 121205, Moscow, Russia; Corresponding author. Vladimir Zelman Center for Neurobiology and Brain Rehabilitation, Skolkovo Institute of Science and Technology, 121205, Moscow, Russia.Vladimir Zelman Center for Neurobiology and Brain Rehabilitation, Skolkovo Institute of Science and Technology, 121205, Moscow, Russia; Faculty of Biology, Shenzhen MSU-BIT University, 518115, Shenzhen, China; Corresponding author. Vladimir Zelman Center for Neurobiology and Brain Rehabilitation, Skolkovo Institute of Science and Technology, 121205, Moscow, Russia.Vladimir Zelman Center for Neurobiology and Brain Rehabilitation, Skolkovo Institute of Science and Technology, 121205, Moscow, RussiaFaculty of Mechanics and Mathematics, Lomonosov Moscow State University, 119991, Moscow, Russia; Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, 194223, Saint Petersburg, RussiaVladimir Zelman Center for Neurobiology and Brain Rehabilitation, Skolkovo Institute of Science and Technology, 121205, Moscow, Russia; Department of Human and Animal Physiology, Faculty of Biology, Lomonosov Moscow State University, 119234, Moscow, RussiaMental imagery is a crucial cognitive process, yet its underlying neural mechanisms remain less understood compared to perception. Furthermore, within the realm of mental imagery, the somatosensory domain is particularly underexplored compared to other sensory modalities. This study aims to investigate the influence of tactile imagery (TI) on cortical somatosensory processing. We explored the cortical manifestations of TI by recording EEG activity in healthy human subjects. We investigated event-related somatosensory oscillatory dynamics during TI compared to actual tactile stimulation, as well as somatosensory evoked potentials (SEPs) in response to short vibrational stimuli, examining their amplitude-temporal characteristics and spatial distribution across the scalp. EEG activity exhibited significant changes during TI compared to the no-imagery baseline. TI caused event-related desynchronization (ERD) of the contralateral μ-rhythm, with a notable correlation between ERD during imagery and real stimulation across subjects. TI also modulated several SEP components in sensorimotor and frontal areas, showing increases in the contralateral P100 and P300, contra- and ipsilateral P300, frontal P200, and parietal P600 components. The results clearly indicate that TI affects cortical processing of somatosensory stimuli, impacting EEG responses in various cortical areas. The assessment of SEPs in EEG could serve as a versatile marker of tactile imagery in practical applications. We propose incorporating TI in imagery-based brain-computer interfaces (BCIs) to enhance sensorimotor restoration and sensory substitution. This approach underscores the importance of somatosensory mental imagery in cognitive neuroscience and its potential applications in neurorehabilitation and assistive technologies.http://www.sciencedirect.com/science/article/pii/S2405844024168387Tactile imagerySomatosensory evoked potentialsEvent-related desynchronization/synchronizationEEGVibrotactile stimulationCerebral cortex |
| spellingShingle | Marina Morozova Lev Yakovlev Nikolay Syrov Mikhail Lebedev Alexander Kaplan Tactile imagery affects cortical responses to vibrotactile stimulation of the fingertip Heliyon Tactile imagery Somatosensory evoked potentials Event-related desynchronization/synchronization EEG Vibrotactile stimulation Cerebral cortex |
| title | Tactile imagery affects cortical responses to vibrotactile stimulation of the fingertip |
| title_full | Tactile imagery affects cortical responses to vibrotactile stimulation of the fingertip |
| title_fullStr | Tactile imagery affects cortical responses to vibrotactile stimulation of the fingertip |
| title_full_unstemmed | Tactile imagery affects cortical responses to vibrotactile stimulation of the fingertip |
| title_short | Tactile imagery affects cortical responses to vibrotactile stimulation of the fingertip |
| title_sort | tactile imagery affects cortical responses to vibrotactile stimulation of the fingertip |
| topic | Tactile imagery Somatosensory evoked potentials Event-related desynchronization/synchronization EEG Vibrotactile stimulation Cerebral cortex |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024168387 |
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