Visual context affects the perceived timing of tactile sensations elicited through intracortical microstimulation: a case study of two participants.

ABSTRACT: Intracortical microstimulation (ICMS) is a technique to provide tactile sensations for a somatosensory brain-machine interface (BMI). A viable BMI must function within the rich, multisensory environment of the real world, but how ICMS is integrated with other sensory modalities is poorly understood. To investigate how ICMS percepts are integrated with visual information, ICMS and visual stimuli were delivered at varying times relative to one another. Both visual context and ICMS current amplitude were found to bias the qualitative experience of ICMS. In two tetraplegic participants, ICMS and visual stimuli were more likely to be experienced as occurring simultaneously in a realistic visual condition compared with an abstract one, demonstrating an effect of visual context on the temporal bi

SUBMITTER: Rosenthal IA 

PROVIDER: S-EPMC12676579 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature