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Parietal neural prosthetic control of a computer cursor in a graphical-user-interface task

Revechkis, Boris and Aflalo, Tyson N. S. and Kellis, Spencer and Pouratian, Nader and Andersen, Richard A. (2014) Parietal neural prosthetic control of a computer cursor in a graphical-user-interface task. Journal of Neural Engineering, 11 (6). Art. No. 066014. ISSN 1741-2560. PMCID PMC4381869.

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Objective. To date, the majority of Brain–Machine Interfaces have been used to perform simple tasks with sequences of individual targets in otherwise blank environments. In this study we developed a more practical and clinically relevant task that approximated modern computers and graphical user interfaces (GUIs). This task could be problematic given the known sensitivity of areas typically used for BMIs to visual stimuli, eye movements, decision-making, and attentional control. Consequently, we sought to assess the effect of a complex, GUI-like task on the quality of neural decoding. Approach. A male rhesus macaque monkey was implanted with two 96-channel electrode arrays in area 5d of the superior parietal lobule. The animal was trained to perform a GUI-like 'Face in a Crowd' task on a computer screen that required selecting one cued, icon-like, face image from a group of alternatives (the 'Crowd') using a neurally controlled cursor. We assessed whether the crowd affected decodes of intended cursor movements by comparing it to a 'Crowd Off' condition in which only the matching target appeared without alternatives. We also examined if training a neural decoder with the Crowd On rather than Off had any effect on subsequent decode quality. Main results. Despite the additional demands of working with the Crowd On, the animal was able to robustly perform the task under Brain Control. The presence of the crowd did not itself affect decode quality. Training the decoder with the Crowd On relative to Off had no negative influence on subsequent decoding performance. Additionally, the subject was able to gaze around freely without influencing cursor position. Significance. Our results demonstrate that area 5d recordings can be used for decoding in a complex, GUI-like task with free gaze. Thus, this area is a promising source of signals for neural prosthetics that utilize computing devices with GUI interfaces, e.g. personal computers, mobile devices, and tablet computers.

Item Type:Article
Related URLs:
URLURL TypeDescription CentralArticle
Aflalo, Tyson N. S.0000-0002-0101-2455
Kellis, Spencer0000-0002-5158-1058
Andersen, Richard A.0000-0002-7947-0472
Additional Information:© 2014 IOP Publishing Ltd. Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 15 May 2014, revised 22 September 2014. Accepted for publication 20 October 2014. Published 14 November 2014. This work was supported by NIH Grant R01 EY015545 and R01 EY013337. We thank Drs Eunjung Hwang and Chess Stetson for scientific discussion, Tessa Yao for editorial assistance, Kelsie Pejsa for animal care, and Viktor Shcherbatyuk for technical assistance.
Funding AgencyGrant Number
NIHR01 EY015545
NIHR01 EY013337
Subject Keywords:brain machine interface, neural prosthetics, posterior parietal cortex, graphical user interface
Issue or Number:6
Classification Code:PACS: 87.19.L-, 87.85.Ng, 87.85.J-, 42.66.Ew,
PubMed Central ID:PMC4381869
Record Number:CaltechAUTHORS:20150106-132638397
Persistent URL:
Official Citation:Parietal neural prosthetic control of a computer cursor in a graphical-user-interface task Boris Revechkis et al 2014 J. Neural Eng. 11 066014
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53215
Deposited On:06 Jan 2015 23:31
Last Modified:19 Aug 2020 17:20

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