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Remote photonic sensing of action potential in mammalian nerve cells via histogram-based analysis of temporal spatial acoustic vibrations

Authors :
Ariel Halevi
Nairouz Farah
Nisan Ozana
Sharon Cohen
Assaf Shoval
Orit Shefi
Yossi Mandel
Zeev Zalevsky
Source :
Optics express. 30(9)
Publication Year :
2022

Abstract

Label free and remote action potential detection in neurons can be of great importance in the neuroscience research field. This paper presents a novel label free imaging modality based on the detection of temporal vibrations of speckle patterns illuminating the sample. We demonstrated the feasibility of detecting action potentials originating from spontaneous and stimulated activity in cortical cell culture. The spatiotemporal vibrations of isolated cortical cells were extracted by illuminating the culture with a laser beam while the vibrations of the random back scattered secondary speckle patterns are captured by a camera. The postulated action potentials were estimated following correlation-based analysis on the captured vibrations, where the variance deviation of the signal from a Gaussian distribution is directly associated with the action potential events. The technique was validated in a series of experiments in which the optical signals were acquired concurrently with microelectrode array (MEA) recordings. Our results demonstrate the ability of detecting action potential events in mammalian cells remotely via extraction of acoustic vibrations.

Details

ISSN :
10944087
Volume :
30
Issue :
9
Database :
OpenAIRE
Journal :
Optics express
Accession number :
edsair.doi.dedup.....b80277fbd380dc9175f72e14c9a92da0