HOME >> MEDICINE >> NEWS
Nanowire arrays can detect signals along individual neurons

CAMBRIDGE, Mass. -- Opening a whole new interface between nanotechnology and neuroscience, scientists at Harvard University have used slender silicon nanowires to detect, stimulate, and inhibit nerve signals along the axons and dendrites of live mammalian neurons.

Harvard chemist Charles M. Lieber and colleagues report on this marriage of nanowires and neurons this week in the journal Science.

"We describe the first artificial synapses between nanoelectronic devices and individual mammalian neurons, and also the first linking of a solid-state device -- a nanowire transistor -- to the neuronal projections that interconnect and carry information in the brain," says Lieber, the Mark Hyman, Jr., Professor of Chemistry in Harvard's Faculty of Arts and Sciences and Division of Engineering and Applied Sciences. "These extremely local devices can detect, stimulate, and inhibit propagation of neuronal signals with a spa-tial resolution unmatched by existing techniques."

Electrophysiological measurements of brain activity play an important role in understanding signal propagation through individual neurons and neuronal networks, but existing technologies are relatively crude: Micropipette electrodes poked into cells are invasive and harmful, and microfabricated electrode arrays are too bulky to detect activity at the level of individual axons and dendrites, the neuronal projections responsible for electrical signal propagation and inter-neuron communication.

By contrast, the tiny nanowire transistors developed by Lieber and colleagues gently touch a neuronal projection to form a hybrid synapse, making them noninvasive, and are thousands of times smaller than the electronics now used to measure brain activity.

Lieber's group has previously shown that nanowires can detect, with great precision, molecular markers indicating the presence of cancer in the body, as well as single viruses. Their latest work takes advantage of the
'"/>

Contact: Steve Bradt
steve_bradt@harvard.edu
617-496-8070
Harvard University
24-Aug-2006


Page: 1 2

Related medicine news :

1. Large-scale cross-platform study of research microarrays uncovers high concordance across platforms
2. Method shows promise for early detection of pancreatic cancer
3. Researchers develop criteria to detect bone mass deficiencies in children with chronic diseases
4. MRI detects cancers missed by mammography in breast cancer patients
5. Doctors have key role in preventing and detecting child neglect and abuse
6. Doctors, engineers develop new wireless system to detect esophageal reflux
7. Dentists need more training in oral cancer detection
8. Personality changes may help detect form of dementia
9. Advances in screening and markers improve early detection of colorectal cancer
10. World-leading innovation in child-allergy detection
11. New accreditation program for radiation detector labs

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:3/30/2021)... , ... March 29, 2021 , ... ... the 21st Century , A Virtual Workshop Presented by WCG FDAnews and Cerulean ... 4:30 pm EDT, https://wcg.swoogo.com/modern-sop-and-quality-systems , Are one’s SOPs written for the ...
(Date:3/30/2021)... ... March 29, 2021 , ... According to data released ... reproductive age (13-44) in need of publicly funded contraception live in counties impacted by ... Colorado’s 64 counties have lost some of their Title X resources. , The ...
(Date:3/30/2021)... ... March 29, 2021 , ... Health Literacy Innovations (HLI), a ... confusion due to low health literacy today announces a new partnership with the ... work with ACAP’s member Safety Net Health Plans, those that provide comprehensive health ...
(Date:3/30/2021)... ... ... Dr. Colin Campbell is proud to announce the 1 year anniversary in their new state ... internal medicine and is a primary care specialist who has been practicing for 23 years. ... keep South Jersey healthy one patient at a time. , “Over the past year, Dr. ...
(Date:3/30/2021)... ... March 30, 2021 , ... The COVID-19 ... and survivors; their families; and their caregivers. Crossroads4Hope is addressing the needs of ... emotional support system, MyGo2Support, which meets needs of people impacted by cancer, no ...
Breaking Medicine News(10 mins):
(Date:3/30/2021)... ... March 29, 2021 , ... The University of Texas Health Science Center ... San Antonio Multispecialty and Research Hospital, a destination center for research and treatment of ... In a nod to the COVID-19 pandemic, the ceremony was held virtually. , William ...
(Date:3/30/2021)... ... March 29, 2021 , ... Iora Health ... primary care, has partnered with Devoted Health , one of the fastest-growing ... across Maricopa County and provides seniors with the highest-quality care and experience possible, ...
(Date:3/30/2021)... CITY (PRWEB) , ... March 29, 2021 , ... ... has joined the Vaccine Credential Initiative (VCI), a group bringing together leading health ... record of vaccination status, based on open, interoperable standards. By joining the VCI ...
Breaking Medicine Technology:
Cached News: