scholarly journals Cortical auditory-evoked potential as a biomarker of central auditory maturation in term and preterm infants during the first 3 months

Clinics ◽  
2021 ◽  
Vol 76 ◽  
Author(s):  
Dayane Domeneghini Didoné ◽  
Lilian Sanches Oliveira ◽  
Alessandra Spada Durante ◽  
Kátia de Almeida ◽  
Michele Vargas Garcia ◽  
...  
Keyword(s):  
Preterm Infants ◽  
Evoked Potential ◽  
Auditory Evoked Potential ◽  
Auditory Maturation ◽  
Cortical Auditory Evoked Potential

scholarly journals Early exposure to environmental sounds and the development of cortical auditory evoked potentials of preterm infants during the first three months of life

2020 ◽  
Author(s):  
Hannalice Gottschalck Cavalcanti ◽  
Aryelly Dayane da Silva Nunes ◽  
Brenda Karla Silva da Cunha ◽  
Kátia de Freitas Alvarenga ◽  
Sheila Andreoli Balen ◽  
...  
Keyword(s):  
Preterm Infants ◽  
Auditory Evoked Potentials ◽  
Evoked Potential ◽  
External Environment ◽  
Auditory Evoked Potential ◽  
Sensitive Period ◽  
Early Exposure ◽  
Socially Relevant ◽  
Cortical Auditory Evoked Potentials ◽  
Cortical Auditory Evoked Potential

Abstract Objective: Preterm infants are exposed earlier than their term counterparts to unattenuated sounds from the external environment during the sensitive period of the organization of the auditory cortical circuitry. In the current study, we investigate the effect of preterm birth on the course of development of auditory cortical areas by evaluating how gestational age (GA) correlates with the latency of the P1 component of the cortical auditory evoked potential (CAEP) of two experimental groups measured at one or three months of age. Results: Our sample consisted of 23 infants delivered at GA ranging from 31.28-41.42 weeks and separated into two groups evaluated transversally at one or three months of corrected age (CA). In the group evaluated at one-month CA, the latency of the component P1 was similar in both terms and infants classified as late-preterm (GA>32 weeks). However, in the group evaluated at three months CA, P1 latency was significantly smaller in preterms. These preliminary results suggest an acceleration of the development of auditory cortical pathways in preterms, probably due to their early exposure to socially relevant auditory stimuli from the external environment.

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

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.

Cellular generators of the cortical auditory evoked potential initial component

1992 ◽  
Vol 84 (2) ◽  
pp. 196-200 ◽  
Author(s):  
Mitchell Steinschneider ◽  
Craig E. Tenke ◽  
Charles E. Schroeder ◽  
Daniel C. Javitt ◽  
Gregory V. Simpson ◽  
...  
Keyword(s):  
Evoked Potential ◽  
Auditory Evoked Potential ◽  
Initial Component ◽  
Cortical Auditory Evoked Potential

Developmental changes in refractoriness of the cortical auditory evoked potential

2005 ◽  
Vol 116 (3) ◽  
pp. 648-657 ◽  
Author(s):  
Phillip M. Gilley ◽  
Anu Sharma ◽  
Michael Dorman ◽  
Kathryn Martin
Keyword(s):  
Evoked Potential ◽  
Auditory Evoked Potential ◽  
Developmental Changes ◽  
Cortical Auditory Evoked Potential

scholarly journals Cortical Auditory Evoked Potentials with Simple (Tone Burst) and Complex (Speech) Stimuli in Children with Cochlear Implant

2017 ◽  
Vol 21 (04) ◽  
pp. 351-357
Author(s):  
Kelly Vasconcelos Martins ◽  
Daniela Gil
Keyword(s):  
Cochlear Implant ◽  
Auditory Evoked Potentials ◽  
Evoked Potential ◽  
Tone Burst ◽  
Auditory Evoked Potential ◽  
Aural Rehabilitation ◽  
Auditory Rehabilitation ◽  
Complex Stimuli ◽  
Significant Difference ◽  
Cortical Auditory Evoked Potential

Introduction The registry of the component P1 of the cortical auditory evoked potential has been widely used to analyze the behavior of auditory pathways in response to cochlear implant stimulation. Objective To determine the influence of aural rehabilitation in the parameters of latency and amplitude of the P1 cortical auditory evoked potential component elicited by simple auditory stimuli (tone burst) and complex stimuli (speech) in children with cochlear implants. Method The study included six individuals of both genders aged 5 to 10 years old who have been cochlear implant users for at least 12 months, and who attended auditory rehabilitation with an aural rehabilitation therapy approach. Participants were submitted to research of the cortical auditory evoked potential at the beginning of the study and after 3 months of aural rehabilitation. To elicit the responses, simple stimuli (tone burst) and complex stimuli (speech) were used and presented in free field at 70 dB HL. The results were statistically analyzed, and both evaluations were compared. Results There was no significant difference between the type of eliciting stimulus of the cortical auditory evoked potential for the latency and the amplitude of P1. There was a statistically significant difference in the P1 latency between the evaluations for both stimuli, with reduction of the latency in the second evaluation after 3 months of auditory rehabilitation. There was no statistically significant difference regarding the amplitude of P1 under the two types of stimuli or in the two evaluations. Conclusion A decrease in latency of the P1 component elicited by both simple and complex stimuli was observed within a three-month interval in children with cochlear implant undergoing aural rehabilitation.

scholarly journals Normal hearing young adults with mild tinnitus: Reduced inhibition as measured through sensory gating

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Julia Campbell ◽  
Connor Bean ◽  
Alison LaBrec
Keyword(s):  
Young Adults ◽  
Evoked Potential ◽  
Sensory Gating ◽  
Normal Hearing ◽  
Auditory Evoked Potential ◽  
Tinnitus Severity ◽  
Hearing Thresholds ◽  
Central Inhibition ◽  
Low Amplitude ◽  
Cortical Auditory Evoked Potential

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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