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<p>Sensation plays a pivotal role in the orchestration of our daily lives. Intracortical microstimulation (ICMS) can elicit artificial sensations in persons who have lost sensation due to neurological injury or disease. Despite ongoing clinical studies to assess the safety and efficacy of ICMS, the mechanisms underlying neural activation by ICMS and their implications for perception are not well understood. This Review delves into the current understanding of ICMS mechanisms, drawing parallels with physiological sensory processing in the cortex. We explore emerging approaches and note challenges to current technologies, including resolution and the tissue response to electrode insertion. We conclude by highlighting the basic principles of ICMS, lingering questions and important focus areas for continued development.</p>

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Neural mechanisms underlying intracortical microstimulation for sensory restoration

  • 期刊论文

  • 发表日期：

    2026年1月15日

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  • Christopher Hughes,
  • Xing Chen,
  • Warren Grill,
  • Takashi D. Y. Kozai

摘要

Sensation plays a pivotal role in the orchestration of our daily lives. Intracortical microstimulation (ICMS) can elicit artificial sensations in persons who have lost sensation due to neurological injury or disease. Despite ongoing clinical studies to assess the safety and efficacy of ICMS, the mechanisms underlying neural activation by ICMS and their implications for perception are not well understood. This Review delves into the current understanding of ICMS mechanisms, drawing parallels with physiological sensory processing in the cortex. We explore emerging approaches and note challenges to current technologies, including resolution and the tissue response to electrode insertion. We conclude by highlighting the basic principles of ICMS, lingering questions and important focus areas for continued development.