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Proceedings Paper

A common path optical coherence tomography based electrode for structural imaging of nerves and recording of action potentials
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Paper Abstract

Current technologies for monitoring neural activity either use different variety of electrodes (electrical recording) or require contrast agents introduced exogenously or through genetic modification (optical imaging). Here we demonstrate an optical method for non-contact and contrast agent free detection of nerve activity using phase-resolved optical coherence tomography (pr-OCT). A common-path variation of the pr-OCT is recently implemented and the developed system demonstrated the capability to detect rapid transient structural changes that accompany neural spike propagation. No averaging over multiple trials was required, indicating its capability of single-shot detection of individual impulses from functionally stimulated Limulus optic nerve. The strength of this OCT-based optical electrode is that it is a contactless method and does not require any exogenous contrast agent. With further improvements in accuracy and sensitivity, this optical electrode will play a complementary role to the existing recording technologies in future.

Paper Details

Date Published: 8 March 2013
PDF: 8 pages
Proc. SPIE 8565, Photonic Therapeutics and Diagnostics IX, 856565 (8 March 2013); doi: 10.1117/12.2005095
Show Author Affiliations
M. Shahidul Islam, Univ. of California, Riverside (United States)
Md. Rezuanul Haque, Univ. of California, Riverside (United States)
Christian M. Oh, Univ. of California, Riverside (United States)
Yan Wang, Univ. of California, Riverside (United States)
B. Hyle Park, Univ. of California, Riverside (United States)


Published in SPIE Proceedings Vol. 8565:
Photonic Therapeutics and Diagnostics IX
Andreas Mandelis; Brian Jet-Fei Wong; Anita Mahadevan-Jansen; Henry Hirschberg M.D.; Hyun Wook Kang; Nikiforos Kollias; Melissa J. Suter; Kenton W. Gregory M.D.; Guillermo J. Tearney M.D.; Stephen Lam; Bernard Choi; Steen J. Madsen; Bodo E. Knudsen M.D.; E. Duco Jansen; Justus F. Ilgner M.D.; Haishan Zeng; Matthew Brenner; Laura Marcu, Editor(s)

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