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A Wireless Bi-Directional Brain-Computer Interface Supporting Both Bluetooth and Wi-Fi Transmission. | LitMetric

AI Article Synopsis

  • Wireless neural signal transmission is crucial for neuroscience and treating neural disorders but traditional systems face limitations such as low sampling rates and single transmission modes.
  • The new bi-directional brain-computer interface features both Bluetooth for low-frequency signals (up to 14.4 kS/s) and Wi-Fi for high-frequency signals (up to 56.8 kS/s), making it adaptable for different research needs.
  • It also includes wireless stimulation capabilities that can deliver adjustable current pulses, providing a comprehensive solution for neural recording and stimulation.

Article Abstract

Wireless neural signal transmission is essential for both neuroscience research and neural disorder therapies. However, conventional wireless systems are often constrained by low sampling rates, limited channel counts, and their support of only a single transmission mode. Here, we developed a wireless bi-directional brain-computer interface system featuring dual transmission modes. This system supports both low-power Bluetooth transmission and high-sampling-rate Wi-Fi transmission, providing flexibility for various application scenarios. The Bluetooth mode, with a maximum sampling rate of 14.4 kS/s, is well suited for detecting low-frequency signals, as demonstrated by both in vitro recordings of signals from 10 to 50 Hz and in vivo recordings of 16-channel local field potentials in mice. More importantly, the Wi-Fi mode, offering a maximum sampling rate of 56.8 kS/s, is optimized for recording high-frequency signals. This capability was validated through in vitro recordings of signals from 500 to 2000 Hz and in vivo recordings of single-neuron spike firings with amplitudes reaching hundreds of microvolts and high signal-to-noise ratios. Additionally, the system incorporates a wireless stimulation function capable of delivering current pulses up to 2.55 mA, with adjustable pulse width and polarity. Overall, this dual-mode system provides an efficient and flexible solution for both neural recording and stimulation applications.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11596061PMC
http://dx.doi.org/10.3390/mi15111283DOI Listing

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