Navigation Links
Medical devices powered by the ear itself
Date:11/8/2012

Deep in the inner ear of mammals is a natural battery a chamber filled with ions that produces an electrical potential to drive neural signals. In today's issue of the journal Nature Biotechnology, a team of researchers from MIT, the Massachusetts Eye and Ear Infirmary (MEEI) and the Harvard-MIT Division of Health Sciences and Technology (HST) demonstrate for the first time that this battery could power implantable electronic devices without impairing hearing.

The devices could monitor biological activity in the ears of people with hearing or balance impairments, or responses to therapies. Eventually, they might even deliver therapies themselves.

In experiments, Konstantina Stankovic, an otologic surgeon at MEEI, and HST graduate student Andrew Lysaght implanted electrodes in the biological batteries in guinea pigs' ears. Attached to the electrodes were low-power electronic devices developed by MIT's Microsystems Technology Laboratories (MTL). After the implantation, the guinea pigs responded normally to hearing tests, and the devices were able to wirelessly transmit data about the chemical conditions of the ear to an external receiver.

"In the past, people have thought that the space where the high potential is located is inaccessible for implantable devices, because potentially it's very dangerous if you encroach on it," Stankovic says. "We have known for 60 years that this battery exists and that it's really important for normal hearing, but nobody has attempted to use this battery to power useful electronics."

The ear converts a mechanical force the vibration of the eardrum into an electrochemical signal that can be processed by the brain; the biological battery is the source of that signal's current. Located in the part of the ear called the cochlea, the battery chamber is divided by a membrane, some of whose cells are specialized to pump ions. An imbalance of potassium and sodium ions on opposite sides of the
'/>"/>

Contact: Kimberly Allen
allenkc@mit.edu
617-253-2702
Massachusetts Institute of Technology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. NCH partners with Silicon Valley to market high-end diagnostic and medical research software
2. US investment in biomedical and health research on downward trend
3. Marc Travel Awards announced for the 2012 Biomedical Engineering Society Annual Meeting
4. NIBIB and HHMI announce graduate biomedical training awards
5. Dr. Tom Maniatis honored with 2012 Lasker-Koshland Special Achievement Award in Medical Science
6. University of Alberta medical scientists first in the world to look at structure of vital molecule
7. CNIO participates in the ENCODE project: A stride forward in biomedical research
8. MU celebrates $5 million partnership for advancing biomedical discoveries
9. £30 million boost for biomedical engineering research
10. Reproducibility Initiative to increase the value of biomedical research
11. BGI Tech and BAB jointly develop transgenic mice platform for biomedical research
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/19/2014)... New measurements from fish purchased at retail seafood ... to which mislabeling can expose consumers to unexpectedly ... Fishery stock "substitutions"which falsely present a fish of ... originare the most dangerous mislabeling offense, according to ... scientists. , "Accurate labeling of seafood is essential ...
(Date:8/19/2014)... a biomarker strongly associated with basal-like breast cancer, ... many types of chemotherapy. The biomarker, a protein ... therapeutics designed to treat this often deadly cancer. ... The Cancer Genome Atlas, molecular biologists Curt M. ... and bioinformatics techniques to detect patterns of gene ...
(Date:8/19/2014)... -- Scientists at the Houston Methodist Research Institute have ... cells using a pipette -- a common laboratory tool ... and preliminary test results in a recent issue of ... , "Studying single cells and their unique functions has ... department. faculty member Lidong Qin, Ph.D., the project,s principal ...
Breaking Biology News(10 mins):Seafood substitutions can expose consumers to unexpectedly high mercury 2Seafood substitutions can expose consumers to unexpectedly high mercury 3Biomarker in an aggressive breast cancer is identified 2Biomarker in an aggressive breast cancer is identified 3Moving single cells around -- accurately and cheaply 2
... takes on special significance when scientists and students gather. ... success and survival with bright colors, flash and iridescence ... and materials scientists will delve into whats behind all ... held Feb. 6-9 at Arizona State University in Tempe, ...
... in the Earth,s oceans consume 90 percent of the ... ice preventing large amounts of methane from reaching ... microbes that accomplish this feat do not simply reverse ... compound instead. "The dominant role anaerobic oxidation of ...
... grants have been awarded to Public Health faculty at Weill ... Kenneth W. Griffin is the recipient of a three-year $1.6 ... (NIDA) for research into the long-term effects of a school-based ... New York City middle schools. The study will focus on ...
Cached Biology News:Iridescence workshop promotes nature's nanotechnology 2Paired microbes eliminate methane using sulfur pathway 22 federal public health grants awarded to Weill Cornell Medical College 2
(Date:8/20/2014)... Not long ago, it was more or less ... in the development cycle – even after the final ... that, like many things GxP, expectations for early E&L ... drug sponsors have been required by authorities to provide ... I/II. It’s not only clinical trial material containers causing ...
(Date:8/20/2014)... ear could improve the health of your heart, researchers ... Leeds used a standard TENS machine like those designed ... the tragus, the small raised flap at the front ... canal. , The stimulation changed the influence of the ... signals that can drive failing hearts too hard. , ...
(Date:8/20/2014)... GraphDB™ 6.0 from ... to the enterprise replication cluster, faster loading speeds, ... and Elasticsearch. This release happens to coincide with ... – GraphDB™ was formerly known as OWLIM. ... mature enterprise resilient RDF triplestore will also benefit ...
(Date:8/19/2014)... Shimadzu Scientific Instruments has introduced two ... adding to the company’s extensive line-up of HPLC ... operating environment, and full automation, the i-Series provides ... conventional to ultra-high-speed analysis. , The ... so users can begin building the lab of ...
Breaking Biology Technology:Are Extractable and Leachables going Phase-Appropriate? New Webinar Hosted by Xtalks 2'Tickling' your ear could be good for your heart 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 2Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 3Ontotext Improves Its RDF Triplestore, GraphDB™ 6.0: Enterprise Resilience, Faster Loading Speeds and Connectors to Full-Text Search Engines Top the List of Enhancements 4Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 2Shimadzu’s New i-Series Integrated Liquid Chromatography Systems Provide Laboratories Wider Range of Analytical Capabilities 3
... requires proper wound closure to ensure timely healing and ... received a $100,000 federal grant to develop alternatives to ... develops tissue repair products and advanced coatings for implanted ... Innovation Research grant. , ,The peer-reviewed grant, which ...
... athlete only three years ago, but his Milwaukee-based mobile software ... opening in 1996. , ,And now, the route of ... Asia. , ,Psuik, founder and owner of Developer ... with O2 , a European mobile phone provider, to ...
... Madison, Wis. - Now that two companies he ... another exit strategy, Brian Wiegand's days as a self-described ... the Madison-based NameProtect , a developer of digital ... Service Co. of Wilmington, Del. , ,He will ...
Cached Biology Technology:Milwaukee software developer gains bottom line, loses waistline 2Milwaukee software developer gains bottom line, loses waistline 3Milwaukee software developer gains bottom line, loses waistline 4NameProtect sold, tech entrepreneur to focus on Jellyfish.com 2
...
... Kit has been designed for recovery of DNA from ... Features Ultra fast protocol: DNA is ready ... are easy to resuspend Bead uniformity prevents shearing ... (suitable for PCR) DNA is eluted into sterile ...
... BAS-2500 is ideal for ... Biology (1D electrophoresis, 2D ... Macroarrays); Pharmacokinetics & Toxicology ... layer chromatography); Physical and ...
... microscope is described by end-users to be ... the fundamentals of light microscopy and electronic ... footprint, it does not require much space ... busy lab environment. The DM-BA300 combines Motic's ...
Biology Products: