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.
Original language | English |
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Pages (from-to) | 15512-15523 |
Number of pages | 12 |
Journal | Optics Express |
Volume | 30 |
Issue number | 9 |
DOIs | |
State | Published - 25 Apr 2022 |
Bibliographical note
Publisher Copyright:© 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Funding
Ministry of Science, Technology and Space (101915). The authors would like to acknowledge the financial support from the Israeli ministry of science (MOST), grant number 101915. Acknowledgement. The authors would like to acknowledge the financial support from the Israeli ministry of science (MOST), grant number 101915.
Funders | Funder number |
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Israeli Ministry of Science | |
Ministry of Science, Technology and Space | |
Ministry of Science and Technology, Taiwan | 101915 |