Optical Studies of Action Potential Dynamics with hVOS probes
Autor: | Peter O. Bayguinov, Meyer B. Jackson, Yihe Ma |
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Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
0303 health sciences
Action potential Computer science Dynamics (mechanics) Biomedical Engineering Medicine (miscellaneous) Intact brain Bioengineering 02 engineering and technology 021001 nanoscience & nanotechnology Article Biomaterials 03 medical and health sciences Action (philosophy) Biological neural network Waveform 0210 nano-technology Biological system Rapid response 030304 developmental biology Voltage |
Zdroj: | Curr Opin Biomed Eng |
Popis: | The detection of action potentials and the characterization of their waveform represent basic benchmarks for evaluating optical sensors of voltage. The effectiveness of a voltage sensor in reporting action potentials will determine its usefulness in voltage imaging experiments designed for the study of neural circuitry. The hybrid voltage sensor (hVOS) technique is based on a sensing mechanism with a rapid response to voltage changes. hVOS imaging is thus well suited for optical studies of action potentials. This technique detects action potentials in intact brain slices with an excellent signal-to-noise ratio. These optical action potentials recapitulate voltage recordings with high temporal fidelity. In different genetically-defined types of neurons targeted by cre-lox technology, hVOS recordings of action potentials recapitulate the expected differences in duration. Furthermore, by targeting an hVOS probe to axons, imaging experiments can follow action potential propagation and document dynamic changes in waveform resulting from use-dependent plasticity. |
Databáze: | OpenAIRE |
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