Evoking stable and precise tactile sensations via multi-electrode intracortical microstimulation of the somatosensory cortex.

ABSTRACT: Tactile feedback from brain-controlled bionic hands can be partially restored via intracortical microstimulation (ICMS) of the primary somatosensory cortex. In ICMS, the location of percepts depends on the electrode's location and the percept intensity depends on the stimulation frequency and amplitude. Sensors on a bionic hand can thus be linked to somatotopically appropriate electrodes, and the contact force of each sensor can be used to determine the amplitude of a stimulus. Here we report a systematic investigation of the localization and intensity of ICMS-evoked percepts in three participants with cervical spinal cord injury. A retrospective analysis of projected fields showed that they were typically composed of a focal hotspot with diffuse borders, arrayed somatotopically in keeping

SUBMITTER: Greenspon CM 

PROVIDER: S-EPMC12176618 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature