Advertisement

Topics

General anesthetic induced differential changes in latency of auditory evoked potential in the central nucleus of inferior colliculus of mouse.

08:00 EDT 10th June 2019 | BioPortfolio

Summary of "General anesthetic induced differential changes in latency of auditory evoked potential in the central nucleus of inferior colliculus of mouse."

Confirming the effect of general anesthetic on brainstem auditory evoked potential (BAEP) is important to interpret BAEP data, elucidate the neuroanatomical sites of action of general anesthetic and monitor the effect of general anesthetic. However, the effect of general anesthetic on BAEP is not thoroughly understood, which may be due to unreasonable acoustic stimulation scheme. This study aimed to redesign acoustic stimulation scheme and attempted to test our hypothesis that general anesthetic induces differential changes in BAEP latency in mouse. Auditory evoked potential in the central nucleus of inferior colliculus (AEP-ICC) was used to represent BAEP. Every 10 min after pentobarbital anesthesia, AEP-ICC was recorded by delivering tones with a rate of 1/s, and pentobarbital blood concentration (PBC) was measured, until the mice awoke. AEP-ICC latency to 80-dB SPL sounds (L) and latency change in nerve fibers (ΔL) did not present regular changes, and AEP-ICC latency to 50-dB SPL sounds (L) and latency change in synapses (ΔI) gradually decreased as pentobarbital was metabolized. L and ΔI changes were exponentially associated with decreased PBC, and L showed a linear relationship with ΔI. We conclude that, general anesthetic acts on auditory brainstem; general anesthetic does not alter L and ΔL but increases L and ΔI; L and ΔL can evaluate the function of auditory brainstem and its inferior structures under general anesthesia; L and ΔI exponentially reflect the blood concentration of a general anesthetic.

Affiliation

Journal Details

This article was published in the following journal.

Name: Neuroscience letters
ISSN: 1872-7972
Pages: 134325

Links

DeepDyve research library

PubMed Articles [17551 Associated PubMed Articles listed on BioPortfolio]

Electrophysiological changes in auditory evoked potentials in rats with salicylate-induced tinnitus.

Early-response Auditory Evoked Potentials (AEPs) in humans are significantly altered in tinnitus. These changes are closely related to that seen in animals, leading to new approaches to study tinnitus...

Modulation of temporal resolution and speech long-latency auditory-evoked potentials by transcranial direct current stimulation in children and adolescents with dyslexia.

In recent years, transcranial direct current stimulation (tDCS) has been used as a safe and non-invasive method for children and adolescents with dyslexia. Our aim in this study was to investigate the...

Human scalp evoked potentials related to the fusion between a sound source and its simulated reflection.

The auditory system needs to fuse the direct wave (lead) from a sound source and its time-delayed reflections (lag) to achieve a single sound image perception. This lead-lag fusion plays crucial roles...

Auditory evoked response delays in children with 47,XYY syndrome.

47,XYY syndrome (XYY) is a male sex chromosome disorder where individuals have an X chromosome and two copies of the Y chromosome. XYY is associated with a physical phenotype and carries increased ris...

Auditory-induced response in the primary sensory cortex of rodents.

The details of auditory response at the subthreshold level in the rodent primary somatosensory cortex, the barrel cortex, have not been studied extensively, although several phenomenological reports h...

Clinical Trials [6782 Associated Clinical Trials listed on BioPortfolio]

Long Latency Auditory Evoked Potentials (P300) Outcomes in Patients With Unilateral Cochlear Implants

Bilateral severe to profound hearing loss is a socially disabling handicap. Cochlear implants can be used to improve hearing in cases where conventional hearing aids are not effective. The...

Epileptiform EEG Patterns During Induction of General Anaesthesia With Sevoflurane Compared to Those With Propofol

The aim of the study was to assess the influence of volatile induction of general anaesthesia with sevoflurane using two different techniques and intravenous anaesthesia with propofol on t...

Clinical Utility of the Alaris MidLatencyAuditoryEvoked Potentials Monitor to Titrate the Anesthetic-Hypnotic Component of Anesthesia

Index computed in real time from Auditory Evoked Potentials have been described parallel to depth of anesthesia. The goal of the study was to compare general anesthesia guided on Auditory ...

Evaluation of the Global Auditory Nerve Activity for Exploration of Hearing in Humans

To date, all the electrophysiological methods for auditory testing rely on the measure on synchronous evoked auditory nerve activity. This measure only takes into account the response of t...

EEG and Auditory Evoked Potentials During Local Anesthesia

The aim of the present study was to investigate the sensitivity of AEP (auditory evoked potentials) to muscular artefacts using sedation and local anesthesia.

Medical and Biotech [MESH] Definitions

The recorded electrical responses from nerve, muscle, SENSORY RECEPTOR, or area of the CENTRAL NERVOUS SYSTEM following stimulation. They range from less than a microvolt to several microvolts. The evoked potential can be auditory (EVOKED POTENTIALS, AUDITORY), somatosensory (EVOKED POTENTIALS, SOMATOSENSORY), visual (EVOKED POTENTIALS, VISUAL), or motor (EVOKED POTENTIALS, MOTOR), or other modalities that have been reported. Often used synonymously to event-related potentials which are associated with higher level cognitive processes.

The electric response evoked in the CEREBRAL CORTEX by ACOUSTIC STIMULATION or stimulation of the AUDITORY PATHWAYS.

Electrical waves in the CEREBRAL CORTEX generated by BRAIN STEM structures in response to auditory click stimuli. These are found to be abnormal in many patients with CEREBELLOPONTINE ANGLE lesions, MULTIPLE SCLEROSIS, or other DEMYELINATING DISEASES.

Procedure in which an individual is induced into a trance-like state to relieve pain. This procedure is frequently performed with local but not general ANESTHESIA.

Sensory cells of organ of Corti. In mammals, they are usually arranged in three or four rows, and away from the core of spongy bone (the modiolus), lateral to the INNER AUDITORY HAIR CELLS and other supporting structures. Their cell bodies and stereocilia increase in length from the cochlear base toward the apex and laterally across the rows, allowing differential responses to various frequencies of sound.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Relevant Topics

Anesthesia
Anesthesia is the loss of feeling or sensation in all or part of the body. It may result from damage to nerves or can be induced by an anesthetist (a medical professional) using anesthetics such as thiopental or propofol or sevoflurane during a surgical ...

Hearing
Hearing, auditory perception, or audition is the ability to perceive sound by detecting vibrations, changes in the pressure of the surrounding medium through time, through an organ such as the ear. Sound may be heard through solid, liquid, or gaseous mat...


Searches Linking to this Article