Detection, stimulation, and inhibition of neuronal signals with high-density nanowire transistor arrays.
We report electrical properties of hybrid structures consisting of arrays of nanowire field-effect transistors integrated with the individual axons and dendrites of live mammalian neurons, where each nanoscale junction can be used for spatially resolved, highly sensitive detection, stimulation, and/or inhibition of neuronal signal propagation. Arrays of nanowire-neuron junctions enable simultaneous measurement of the rate, amplitude, and shape of signals propagating along individual axons and dendrites. The configuration of nanowire-axon junctions in arrays, as both inputs and outputs, makes possible controlled studies of partial to complete inhibition of signal propagation by both local electrical and chemical stimuli. In addition, nanowire-axon junction arrays were integrated and tested at a level of at least 50 "artificial synapses" per neuron.
Patolsky
Fernando
F
Department of Chemistry and Chemical Biology, Harvard University, Cambridge, MA 02138, USA.
Timko
Brian P
BP
Yu
Guihua
G
Fang
Ying
Y
Greytak
Andrew B
AB
Zheng
Gengfeng
G
Lieber
Charles M
CM
D000200:Action Potentials; D000818:Animals; D001369:Axons / Q000502:physiology; D002478:Cells, Cultured; D003712:Dendrites / Q000502:physiology; D004553:Electric Conductivity; D004558:Electric Stimulation; D004594:Electrophysiology / Q000295:instrumentation / Q000379:methods*; D008839:Microelectrodes; D049329:Nanostructures; D009433:Neural Inhibition; D016501:Neurites / Q000502:physiology; D009474:Neurons / Q000502:physiology*; D051381:Rats; D011916:Rats, Inbred F344; D017207:Rats, Sprague-Dawley; D012825:Silicon; D013569:Synapses / Q000502:physiology; D014173:Transistors, Electronic
D012825:Silicon