AI Article Synopsis

  • A study explored the use of a brain-computer interface (BCI) linked to a robot arm for people with spinal cord injuries, focusing on enhancing control via sensory feedback.
  • Traditional BCIs lack the ability to provide users with a sense of how hard they are gripping, which is crucial for controlling force accurately.
  • The research demonstrated that using intracortical microstimulation (ICMS) to evoke tactile sensations significantly improved accuracy in grasp force control compared to relying solely on visual feedback.

Article Abstract

After a spinal cord injury, a person may grasp objects using a brain-computer interface (BCI) to control a robot arm. However, most BCIs do not restore somatosensory percepts that would enable someone to sense grasp force. Intracortical microstimulation (ICMS) in the somatosensory cortex can evoke tactile sensations and may therefore offer a viable solution to provide grasp force feedback. We investigated whether a bidirectional BCI could improve grasp force control over a BCI using only visual feedback. When evaluating the error of the applied force during a force matching task, we found that ICMS feedback improved overall applied grasp force accuracy.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7717497PMC
http://dx.doi.org/10.1109/EMBC44109.2020.9175926DOI Listing

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