Optic Nerve Recording
Optic Nerve Recording - Related Videos
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.
02:24
Inducing Local Demyelination in the Optic Nerve Using Lysolecithin
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2025
This video demonstrates the procedure of surgically accessing the optic nerve in an anesthetized animal and precisely delivering lysolecithin to induce focal demyelination, creating neuropathological conditions for further study.
07:34
Minimally-invasive Technique for Injection into Rat Optic Nerve
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Cited by 4 •
2015
Direct injection into the rat optic nerve is useful for regenerative research. We demonstrate a minimally-invasive technique for direct injection into a rat optic nerve that does not involve opening the skull. Using this method, surgical complications are minimized and recovery is more rapid.
11:02
Methods for Experimental Manipulations after Optic Nerve Transection in the Mammalian CNS
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Cited by 10 •
2011
Optic Nerve transection is a widely used model of adult CNS injury. This model is ideal for performing a number of experimental manipulations that target the retina globally or directly target the injured neuronal population of retinal ganglion cells.
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.
FAQs
Extracellular voltage changes provide an electrical readout of action potentials traveling along retinal ganglion cell axons. Because these axons carry signals from the eye toward the brain, the recorded activity reflects transmission at the optic nerve rather than only events confined to the retina. This helps investigators assess how visual information moves through the pathway.
Researchers can compare recorded activity while visual stimulation or retinal conditions are controlled. Differences in the resulting extracellular signals can indicate that the way sensory information is encoded or transmitted has changed. This comparison is useful for linking an experimental manipulation to neural activity carried by retinal ganglion cell axons.
Controlled visual stimulation or retinal conditions make it possible to interpret neural signals against a defined experimental background. Researchers can examine how optic nerve activity changes when the light input or retinal state changes, helping relate those changes to visual processing and signal transmission rather than treating the recording as an isolated measurement.
Researchers position recording electrodes near the optic nerve, apply or control visual stimulation or retinal conditions, and detect extracellular voltage changes. They then examine the resulting signals in relation to the experimental condition. This workflow connects a controlled sensory or retinal state with activity traveling along retinal ganglion cell axons toward the brain.
The signals can show how activity associated with the retina is transmitted toward central visual pathways. In biology, this supports analysis of retinal function, neural connectivity, and visual processing. Because the measurement occurs near the optic nerve, it helps link activity in the retinal pathway with responses relevant to downstream visual circuits.
Researchers can use the method to examine how injury or disease affects neural activity carried from the eye toward the brain. Comparing recordings across experimental conditions can reveal changes in signal transmission and help evaluate effects associated with an experimental treatment. This connects pathology or intervention with measurable activity in the visual pathway.
Optic nerve recordings provide an electrophysiological outcome for studies of experimental treatment. Activity carried by retinal ganglion cell axons can be examined under treatment-related conditions, alongside controlled visual stimulation or retinal states. This helps connect a candidate neuroprotective strategy with changes in retinal function, signal transmission, and communication with central visual pathways.