Insect-machine interface: A carbon nanotube-enhanced flexible neural probe
| Autor: | Joel Voldman, John G. Hildebrand, David M. Otten, Thomas L. Daniel, W.M. Tsang, Richard B. Levine, Alice L. Stone, Zane N. Aldworth |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Nervous system
Materials science media_common.quotation_subject Central nervous system Biophysics Action Potentials Stimulation Nanotechnology Insect Carbon nanotube Nervous System law.invention User-Computer Interface law Manduca medicine Biological neural network Animals Telemetry Premovement neuronal activity media_common Neurons Nanotubes Carbon General Neuroscience fungi Electric Stimulation Electrodes Implanted medicine.anatomical_structure Flight Animal Ventral nerve cord Biomedical engineering |
| Zdroj: | Journal of Neuroscience Methods. 204:355-365 |
| ISSN: | 0165-0270 |
| DOI: | 10.1016/j.jneumeth.2011.11.026 |
| Popis: | We developed microfabricated flexible neural probes (FNPs) to provide a bi-directional electrical link to the moth Manduca sexta. These FNPs can deliver electrical stimuli to, and capture neural activity from, the insect's central nervous system. They are comprised of two layers of polyimide with gold sandwiched in between in a split-ring geometry that incorporates the bi-cylindrical anatomical structure of the insect's ventral nerve cord. The FNPs provide consistent left and right abdominal stimulation both across animals and within an individual animal. The features of the stimulation (direction, threshold charge) are aligned with anatomical features of the moth. We also have used these FNPs to record neuronal activity in the ventral nerve cord of the moth. Finally, by integrating carbon nanotube (CNT)-Au nanocomposites into the FNPs we have reduced the interfacial impedance between the probe and the neural tissue, thus reducing the magnitude of stimulation voltage. This in turn allows use of the FNPs with a wireless stimulator, enabling stimulation and flight biasing of freely flying moths. Together, these FNPs present a potent new platform for manipulating and measuring the neural circuitry of insects, and for other nerves in humans and other animals with similar dimensions as the ventral nerve cord of the moth. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect