Imagined Speech and Visual Imagery as Intuitive Paradigms for Brain-Computer Interfaces

Seo-Hyun Lee, Ji-Ha Park, Deok-Seon Kim
11/14/2024
cs.AI

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Abstract

Brain-computer interfaces (BCIs) have shown promise in enabling communication for individuals with motor impairments. Recent advancements like brain-to-speech technology aim to reconstruct speech from neural activity. However, decoding communication-related paradigms, such as imagined speech and visual imagery, using non-invasive techniques remains challenging. This study analyzes brain dynamics in these two paradigms by examining neural synchronization and functional connectivity through phase-locking values (PLV) in EEG data from 16 participants. Results show that visual imagery produces higher PLV values in visual cortex, engaging spatial networks, while imagined speech demonstrates consistent synchronization, primarily engaging language-related regions. These findings suggest that imagined speech is suitable for language-driven BCI applications, while visual imagery can complement BCI systems for users with speech impairments. Personalized calibration is crucial for optimizing BCI performance.

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Cite this paper

@article{lee2024imagined,
  title  = {Imagined Speech and Visual Imagery as Intuitive Paradigms for Brain-Computer Interfaces},
  author = {Seo-Hyun Lee and Ji-Ha Park and Deok-Seon Kim},
  year   = {2024},
  eprint = {2411.09400},
  archivePrefix = {arXiv},
  url    = {http://arxiv.org/abs/2411.09400v2}
}

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