Cortical neural prosthesis performance improves when eye position is monitored
Cortical neural prosthesis performance improves when eye position is monitored
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DOI：
10.1109/tnsre.2007.906958
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发表时间：
2008-02-01
影响因子：
4.9
通讯作者：
Shenoy, Krishna V.
中科院分区：
文献类型：
--
作者：
Batista, Aaron P.;Yu, Byron M.;Shenoy, Krishna V.
直接从皮层神经元提取信号的神经假体最近已经成为可行的四肢瘫痪个体的辅助技术。现在有必要为改善这些系统的性能做出重大努力。一个可以提高假体性能的简单技术是考虑假体操作中的注视方向。这一提议源于最近的发现，即注视的方向会影响神经修复术中通常针对电极植入的几个区域的神经活动。在这里，我们首先证明，神经假体的性能提高时，眼睛的位置被考虑在内。然后，我们表明，眼睛的位置可以直接从神经活动估计，因此，即使没有跟踪眼睛位置的设备，也可以实现性能增益。
Neural prostheses that extract signals directly from cortical neurons have recently become feasible as assistive technologies for tetraplegic individuals. Significant effort toward improving the performance of these systems is now warranted. A simple technique that can improve prosthesis performance is to account for the direction of gaze in the operation of the prosthesis. This proposal stems from recent discoveries that the direction of gaze influences neural activity in several areas that are commonly targeted for electrode implantation in neural prosthetics. Here, we first demonstrate that neural prosthesis performance does improve when eye position is taken into account. We then show that eye position can be estimated directly from neural activity, and thus performance gains can be realized even without a device that tracks eye position.