High Speed Optical Recordings
High Speed Optical Recordings - Related Videos
11:00
Single-unit In vivo Recordings from the Optic Chiasm of Rat
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Cited by 2 •
2010
Retinal ganglion cells transmit visual information from the eye to the brain with sequences of action potentials. Here, we demonstrate how to record the action potentials of single ganglion cells in vivo from anesthetized rats.
05:40
High-Speed Optical Diagnostics of a Supersonic Ping-Pong Cannon
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2023
We describe a method for the construction of a supersonic ping-pong cannon (SSPPC) along with optical diagnostic techniques for the measurement of ball velocities and the characterization of propagating shock waves during the firing of the cannon.
14:23
Optical Recording of Electrical Activity in Guinea-pig Enteric Networks using Voltage-sensitive Dyes
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Cited by 10 •
2009
This protocol illustrates how voltage-sensitive dyes enable optical recording of electrical activity from intact neural networks such as the plexuses of the guinea-pig enteric nervous system, with an adjustable resolution that ranges from single-cells to multi-ganglionic circuitry.
08:48
Optical Recording of Suprathreshold Neural Activity with Single-cell and Single-spike Resolution
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Cited by 1 •
2012
Understanding the function of the vertebrate central nervous system requires recordings from many neurons because cortical function arises on the level of populations of neurons. Here we describe an optical method to record suprathreshold neural activity with single-cell and single-spike resolution, dithered random-access scanning. This method records somatic fluorescence calcium signals from up to 100 neurons with high temporal resolution. A maximum-likelihood algorithm deconvolves the...
06:49
Visual Evoked Potential Recording in a Rat Model of Experimental Optic Nerve Demyelination
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Cited by 14 •
2015
Focal demyelination is induced in the optic nerve using lysolecithin microinjection. Visual evoked potentials are recorded via skull electrodes implanted over the visual cortex to examine the signal conduction along the visual pathway in vivo. This protocol details the surgical procedures underlying electrode implantation and optic nerve microinjection.
FAQs
Optical probes translate cellular activity into changes in fluorescence intensity or spectrum. When the biological event alters the probe’s optical behavior, a fast camera or light detector records that change over time. This creates a time-linked signal that can be compared with physiological events, helping researchers distinguish when cellular processes occur and how their dynamics evolve.
Synchronized illumination and image acquisition preserve the timing relationship between excitation and detection. Without coordinated timing, the recorded optical signal may not accurately correspond to the underlying biological event. Synchronization therefore supports reliable analysis of rapid changes, particularly when researchers examine neuronal signaling, calcium dynamics, muscle contraction, or other processes occurring over very short intervals.
High temporal resolution captures changes that occur on millisecond-to-second timescales before they become blurred or undersampled in slower imaging. It can separate closely timed stages of a biological response and show how an optical signal develops during an event. This temporal detail helps connect dynamic cellular behavior with the physiological process producing it.
A typical recording combines a fast camera or light detector, an optical probe, and coordinated illumination and acquisition. The probe supplies a signal that changes with cellular activity, while the detector captures those changes rapidly enough to preserve their timing. Together, these components produce optical measurements suitable for analyzing living biological systems.
High Speed Optical Recordings can be applied to neuronal signaling, intracellular calcium dynamics, muscle contraction, and fast interactions between cells. These examples represent different kinds of biological activity, but each requires timing information that slower imaging may not preserve. Recording the associated optical signals allows researchers to examine how these processes unfold in living systems.
Because the recorded intensity or spectral changes are linked to physiological events, researchers can analyze the timing and progression of biological activity rather than relying only on static images. This supports quantitative study of living systems, including comparisons among cellular responses and examination of rapid mechanisms. The approach is especially relevant when event timing is central to biological interpretation.