Science 22 May 2015:
Vol. 348 no. 6237 pp. 906-910
DOI: 10.1126/science.aaa5417
Vol. 348 no. 6237 pp. 906-910
DOI: 10.1126/science.aaa5417
- REPORT
Decoding motor imagery from the posterior parietal cortex of a tetraplegic human
- Tyson Aflalo1,*,
- Spencer Kellis1,*,
- Christian Klaes1,
- Brian Lee2,
- Ying Shi1,
- Kelsie Pejsa1,
- Kathleen Shanfield3,
- Stephanie Hayes-Jackson3,
- Mindy Aisen3,
- Christi Heck2,
- Charles Liu2,
- Richard A. Andersen1,†
+Author Affiliations
- ↵†Corresponding author. E-mail: andersen@vis.caltech.edu
- ↵* These authors contributed equally to this work.
Nonhuman primate and human studies have suggested that populations of neurons in the posterior parietal cortex (PPC) may represent high-level aspects of action planning that can be used to control external devices as part of a brain-machine interface. However, there is no direct neuron-recording evidence that human PPC is involved in action planning, and the suitability of these signals for neuroprosthetic control has not been tested. We recorded neural population activity with arrays of microelectrodes implanted in the PPC of a tetraplegic subject. Motor imagery could be decoded from these neural populations, including imagined goals, trajectories, and types of movement. These findings indicate that the PPC of humans represents high-level, cognitive aspects of action and that the PPC can be a rich source for cognitive control signals for neural prosthetics that assist paralyzed patients.
- Received for publication 20 December 2014.
- Accepted for publication 31 March 2015.
No hay comentarios:
Publicar un comentario