Electrically-evoked Abr
Electrically-evoked Abr - Related Videos
02:43
Recording Electrically-Evoked Auditory Brainstem Responses in a Deafened Mouse
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2025
This video demonstrates the procedure to implant a cochlear device in a deafened mouse and apply electrical stimuli to record auditory brainstem responses. This procedure enables to understand the basic mechanisms of electrical hearing and can contribute to advancements in cochlear implant technology and auditory neuroscience.
09:06
Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
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Cited by 10 •
2019
Animal models of cochlear implants can advance knowledge of the technological bases of treating permanent sensorineural hearing loss with electrical stimulation. This study presents a surgical protocol for acute deafening and cochlear implantation of an electrode array in mice as well as the functional assessment with auditory brainstem response.
02:20
Recording of Electroretinogram and Visual Evoked Potential in a Rat
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2025
This video demonstrates how to record electroretinogram (ERG) and visual evoked potential (VEP) in a conscious rat. The rat, with surgically implanted electrodes, is first dark-adapted. After applying dilating drops, the animal is placed in a restrainer and positioned in a Ganzfeld bowl. The ERG and VEP signals are then recorded.
03:09
Impact of Direct Current Stimulation on Evoked Epileptic Seizures in Mouse Brain Slices
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2025
The video demonstrates a study for assessing the impact of direct current stimulation (DCS) on epileptic seizures in mouse brain slices. The brain slices containing the connected medial thalamus (MT) and anterior cingulate cortex (ACC) regions are placed in a multielectrode array (MEA). Electrical stimuli to the MT and seizure-inducing drugs are applied to induce epileptic seizures in the ACC. DCS is then applied to assess its impact on evoked seizures.
02:37
Recording of Visual Evoked Potentials via the Skull Electrodes in a Rat Model
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2025
This video demonstrates the process of measuring visual evoked potentials or VEPs in a dark-adapted, anesthetized rat with pre-implanted skull electrodes, which record the electrical signals from the brain's visual cortex in response to light stimuli.
FAQs
Brief, controlled pulses from a cochlear implant or another stimulating electrode activate the auditory pathway directly rather than relying on a sound presented through the outer or middle ear. The resulting neural activity travels toward the brainstem, where synchronized electrical changes can be detected at the scalp. This links the recorded response to auditory nerve and brainstem transmission.
Scalp electrodes capture voltage changes that occur in synchrony with neural activity reaching the brainstem. Their role is to provide an objective electrophysiological record rather than a response based on the participant’s report. This is especially valuable when behavioral testing cannot reliably indicate whether electrical stimulation is producing activity within the auditory pathway.
Direct stimulation allows investigators to examine neural transmission from an implanted or other stimulating electrode into the auditory pathway. The recorded response can therefore provide information about auditory nerve and brainstem function in the presence of electrical hearing technology. This makes the measure useful for studying how device-generated activation engages central auditory structures.
The response supplies an objective indication that electrical stimulation is producing synchronized activity along the auditory nerve and brainstem pathway. Clinicians can use this information alongside other assessments when supporting cochlear implant programming. Its value is greatest when a person cannot provide dependable behavioral feedback, allowing neural responses to inform evaluation of device activation.
A typical recording uses a cochlear implant or other stimulating electrode to deliver brief, controlled electrical pulses while scalp electrodes monitor the resulting voltage changes. The recorded activity is then considered in relation to neural transmission toward the brainstem. This workflow connects stimulation conditions with an objective measure of the evoked neural response.
It is particularly useful when behavioral testing is difficult or cannot provide a dependable measure of auditory function. The method can help evaluate auditory nerve and brainstem responses, support cochlear implant programming, and provide objective evidence of neural activation. These uses extend assessment beyond subjective listening reports and clarify whether the auditory pathway responds to electrical stimulation.
These studies can help investigate how electrical hearing devices activate the auditory pathway and shape central auditory processing. By recording synchronized brainstem activity during controlled stimulation, researchers can examine the neural consequences of device-generated signals. The approach therefore connects the operation of an implant or electrode with measurable activity in early central auditory structures.