A cognitive neuroprosthetic that uses cortical stimulation for somatosensory feedback

被引：70

作者：

Klaes, Christian ^{[1
]}

Shi, Ying ^{[1
]}

Kellis, Spencer ^{[1
]}

Minxha, Juri ^{[1
]}

Revechkis, Boris ^{[1
]}

Andersen, Richard A. ^{[1
]}

机构：

[1] CALTECH, Div Biol & Biol Engn, Pasadena, CA 91125 USA

来源：

JOURNAL OF NEURAL ENGINEERING | 2014年 / 11卷 / 05期

基金：

美国国家卫生研究院;

关键词：

brain-machine interface; neural prosthesis; stimulation; macaque; microelectrodes; parietal cortex; somatosensory cortex; BRAIN-MACHINE INTERFACES; NEURAL-CONTROL; CORTEX; MOVEMENT; MOTOR; TACTILE; SIGNALS; HUMANS; PROSTHESIS; SPIKING;

D O I：

10.1088/1741-2560/11/5/056024

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

Objective. Present day cortical brain-machine interfaces (BMIs) have made impressive advances using decoded brain signals to control extracorporeal devices. Although BMIs are used in a closed-loop fashion, sensory feedback typically is visual only. However medical case studies have shown that the loss of somesthesis in a limb greatly reduces the agility of the limb even when visual feedback is available. Approach. To overcome this limitation, this study tested a closed-loop BMI that utilizes intracortical microstimulation to provide 'tactile' sensation to a non-human primate. Main result. Using stimulation electrodes in Brodmann area 1 of somatosensory cortex (BA1) and recording electrodes in the anterior intraparietal area, the parietal reach region and dorsal area 5 (area 5d), it was found that this form of feedback can be used in BMI tasks. Significance. Providing somatosensory feedback has the poyential to greatly improve the performance of cognitive neuroprostheses especially for fine control and object manipulation. Adding stimulation to a BMI system could therefore improve the quality of life for severely paralyzed patients.

引用

页数：12

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