Cortical Auditory Evoked Potential in Adults With Cochlear Implants: A Comparison With Adults With Normal Hearing

Decreased central inhibition, possibly related to hearing loss, may contribute to chronic tinnitus. However, many individuals with normal hearing thresholds report tinnitus, suggesting that the percept in this population may arise from sources other than peripheral deafferentation. One measure of inhibition is sensory gating. Sensory gating involves the suppression of non-novel input, and is measured through cortical auditory evoked potential (CAEP) responses to paired stimuli. In typical gating function, amplitude suppression is observed in the second CAEP response when compared to the first CAEP response, illustrating inhibitory activity. Using this measure, we investigated central inhibitory processes in normal hearing young adults with and without mild tinnitus to determine whether inhibition may be a contributing factor to the tinnitus percept. Results showed that gating function was impaired in the tinnitus group, with the CAEP Pa component significantly correlated with tinnitus severity. Further exploratory analyses were conducted to evaluate variability in gating function within the tinnitus group, and findings showed that high CAEP amplitude suppressors demonstrated gating performance comparable to adults without tinnitus, while low amplitude suppressors exhibited atypical gating function.

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Automated analysis of bone-conduction cortical auditory evoked potential in normal-hearing neonates

Brazilian Journal of Otorhinolaryngology ◽

10.1016/j.bjorl.2019.09.007 ◽

2019 ◽

Author(s):

Daniela Soares de Brito ◽

Alessandra Spada Durante

Keyword(s):

Evoked Potential ◽

Bone Conduction ◽

Automated Analysis ◽

Normal Hearing ◽

Auditory Evoked Potential ◽

Cortical Auditory Evoked Potential

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P1 cortical auditory evoked potential in children with unilateral or bilateral cochlear implants; implication for the timing of second cochlear implantation

European Archives of Oto-Rhino-Laryngology ◽

10.1007/s00405-018-5021-5 ◽

2018 ◽

Vol 275 (7) ◽

pp. 1759-1765 ◽

Cited By ~ 1

Author(s):

Sung Wook Jeong ◽

Seung Hyun Chung ◽

Lee-Suk Kim

Keyword(s):

Cochlear Implants ◽

Cochlear Implantation ◽

Evoked Potential ◽

Auditory Evoked Potential ◽

Bilateral Cochlear Implants ◽

Cortical Auditory Evoked Potential

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The effect of early versus late lipid infusion in parenteral nutrition on the biochemical and cortical auditory evoked potential parameters in preterm neonates

Egyptian Pediatric Association Gazette ◽

10.1186/s43054-019-0006-6 ◽

2019 ◽

Vol 67 (1) ◽

Author(s):

Rania Mohamed Abdou ◽

Hoda Mahmoud Ibrahim Weheiba

Keyword(s):

Weight Gain ◽

Parenteral Nutrition ◽

Biochemical Parameters ◽

Evoked Potential ◽

Demographic Data ◽

Auditory Evoked Potential ◽

Preterm Neonates ◽

Lipid Infusion ◽

Significant Difference ◽

Cortical Auditory Evoked Potential

Abstract Background As brain activity depends greatly on the functions provided by lipid membranes, dietary fat in early life can affect the developing nervous system. Despite the adoption of an early more aggressive parenteral nutrition approach with amino acid infusions still reluctance to the early use of intravenous lipids in neonates. Aim To compare the effect of delayed versus early introduction of intravenous lipid in preterm on the biochemical parameters and on brain development by the cortical auditory evoked potential (CAEP) latency and amplitude. Methods This is a comparative study included 49 neonates admitted at the ain shams university NICUs. Participants were divided into two groups: 26 in group of early lipid infusion and 23 in late lipid infusion, Demographic data, and biochemical parameters were documented during the 1st 2 weeks of life. The CAEP was performed at age of 6 months. The latency and amplitude of P1 were recorded and compared between both groups. Results In the present work we found that group of early lipid infusion had reach their full oral intake earlier with shorter duration of parenteral nutrition and length of stay. They had better weight gain and significantly better glucose level control than group of late lipid infusion. There was no significant difference in the other chemical parameters between both groups expect for the higher incidence of cholestasis in the group of late lipid infusion. At 6 months of age, the group of early lipid infusion had significantly shorter latency and amplitude of P1 than the group of late lipid infusion. Conclusion Early effective nutrition positively affect feeding tolerance and weight gain and maturation of higher brain centers brain.

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