Intermittent Photic Stimulation in Rabbit Model: A Technique to Induce Epileptic Seizures and Simultaneously Record Multisystem Parameters

Published: April 30, 2023

Abstract

Source: Bosinski, C., et al. Multi-system Monitoring for Identification of Seizures, Arrhythmias and Apnea in Conscious Restrained Rabbits. J. Vis. Exp. (2021).

In this video, we show a procedure for simultaneous recording of video-EEG-ECG-capnography-oximetry data generated by inducing seizures in a rabbit model.

Protocol

All procedures involving animal models have been reviewed by the local institutional animal care committee and the JoVE veterinary review board. 1. Photic stimulation experiment Place a light source with a circular reflector 30 cm in front of the rabbit at eye level, with the flash intensity set to the maximum (16 candela). The light source is indicated by a white dot in Figure 1E. NOTE: A dimly lit room should be used to elicit the pho…

Representative Results

Figure 1: Rabbit connected to equipment. (A) Location of ECG electrodes, Left Arm is indicated by a yellow dot. Right Arm is indicated by a white dot. Left Leg is indicated by a red dot. Ground anterior to the right leg is indicated by a green dot. (B) Rabbit in restrainer with ECG and EEG electrodes attached. (C) Juvenile rabbit in a restrainer …

Divulgations

The authors have nothing to disclose.

Materials

Computer Dell Optiplex 5040 Acquisition computer
ECG Electrode RhythmLink RLSND116-2.5 13mm 35-degree bent (0.4 mm diameter) subdermal pin electrodes
EEG Electrode RhythmLink RLSP513 5-twist 13mm straight (0.4mm diameter) subdermal pin electrodes
EEGLAB (2020) Swartz Center for Computational Neuroscience Open Access Can perform spectral analysis of EEG
Ethernet-to-ethernet adapter Linksys USB3G16 Adapter for connecting the camera to the computer
Foam padding Generic N/A Reduces pressure applied to the neck of small rabbits by the restrainer in order to prevent the adverse cardiorespiratory effects of neck compression
IR Light Bosch EX12LED-3BD-8W Facilitates recordings in the dark
LabChart Pro (2019, Version 8.1.16) ADInstruments N/A ECG Analysis
MATLAB (R2019b, Update 5) MathWorks N/A Required to run EEGLAB
Microphone Sony Stereo ECM-D570P Recording of audible manifestions of seizures
Micropore Medical Tape, Paper, White 3M 1530-1 Used to secure wires and create ear splint
Natus NeuroWorks Natus LC101-8 Acquisition and review software
Photic Stimulator Grass PS22 Stimulator to control frequency, delay, duration, intensity of the light pulses
Plastic wire organizer / bundler 12Vwire.com LM-12-100-BLK Bundle wires to cut down on noise
PS 22 Photic Stimulator Grass Instruments BZA641035 Strobe light with adjustable flash frequency, delay, and intensity
PVC pipe Generic N/A Prevents small rabbits from kicking their hind legs and causing spinal injury
Quantum Amplifier Natus 13926 Amplifier / digitizer
Quantum HeadBox Amplifier Natus 22134 64-pin breakout box
Rabbit Restrainer Plas-Labs 501-TC Various size rabbit restrainers are available. 6" x 18" x 6" in this study.
Rubber pad (booster) Generic N/A Raises small rabbits up in the restrainer to prevent neck compression
SpO2 ear clip NONIN 61000 PureSAT/SpO2
SpO2 sensor adapter NONIN 13931 XPOD PureSAT/SpO2
SRG-X120 1080p PTZ Camera with HDMI, IP & 3G-SDI Output Sony SRG-X120 Impela Camera

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Citer Cet Article
Intermittent Photic Stimulation in Rabbit Model: A Technique to Induce Epileptic Seizures and Simultaneously Record Multisystem Parameters. J. Vis. Exp. (Pending Publication), e20824, doi: (2023).

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