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Neurophotonics • Open Access

Infrared neural stimulation: a new stimulation tool for central nervous system applications
Author(s): Mykyta Chernov; Anna Wang Roe

Paper Abstract

The traditional approach to modulating brain function (in both clinical and basic science applications) is to tap into the neural circuitry using electrical currents applied via implanted electrodes. However, it suffers from a number of problems, including the risk of tissue trauma, poor spatial specificity, and the inability to selectively stimulate neuronal subtypes. About a decade ago, optical alternatives to electrical stimulation started to emerge in order to address the shortcomings of electrical stimulation. We describe the use of one optical stimulation technique, infrared neural stimulation (INS), during which short (of the order of a millisecond) pulses of infrared light are delivered to the neural tissue. Very focal stimulation is achieved via a thermal mechanism and stimulation location can be quickly adjusted by redirecting the light. After describing some of the work done in the peripheral nervous system, we focus on the use of INS in the central nervous system to investigate functional connectivity in the visual and somatosensory areas, target specific functional domains, and influence behavior of an awake nonhuman primate. We conclude with a positive outlook for INS as a tool for safe and precise targeted brain stimulation.

Paper Details

Date Published: 5 August 2014
PDF: 7 pages
Neurophoton. 1(1) 011011 doi: 10.1117/1.NPh.1.1.011011
Published in: Neurophotonics Volume 1, Issue 1
Show Author Affiliations
Mykyta Chernov, Vanderbilt Univ. (United States)
Anna Wang Roe, Vanderbilt Univ. (United States)

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