New 'fuzzy' polymers could improve the performance of electronic brai...( and depressions designed to mesh better...)

New 'fuzzy' polymers could improve the performance of electronic brain implants

and depressions designed to mesh better with neurons. "The scheme is to have these electrodes make a connection with the neurons quickly, before the other cells get in and wall them off," Martin said.

To further encourage connection, Martin and his team have incorporated biological molecules in the polymer coating to selectively attract target neurons. In guinea pigs, the researchers found that uncoated electrodes came out clean after remaining in the brain for a period of time, while coated electrodes were covered with neural tissue. This indicates that the neurons are hanging on to the biologically doped coating, Martin said.

The team also found that the fuzzy surface of the polymer coating, in addition to improving contact with brain tissue, could be used to fine-tune its ability to conduct electrical signals.

Martin's research is being conducted in collaboration with the University of Michigan Center for Neural Communications Technology, the Kresge Hearing Research Institute, and the Keck Center for Tissue Engineering at the University of Utah. Xinyan "Tracy" Cui, Ph.D., who is now working at Unilever, did much of the work that was discussed in the presentation.

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Contact: Sharon Worthy
s_worthy@acs.org
202-872-4371
American Chemical Society
27-Jun-2002

Page: 1 2
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