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Quantitative Assessment of Cortical Auditory-tactile Processing in Children with Disabilities
Published on: January 29, 2014
Protocol to collect late latency auditory evoked potentials.
Luzia Maria Pozzobom Ventura1, Kátia de Freitas Alvarenga, Orozimbo Alves Costa Filho
1Audiology Research Center, Craniofacial Anomaly Rehabilitation Hospital, Sao Paulo University.
Brazilian Journal of Otorhinolaryngology
|March 9, 2010
Summary
Two methods effectively control eye movement artifacts during Long Latency Auditory Evoked Potentials (LLAEP) recordings. The rejection limit control method yielded higher amplitude values in this study.
Area of Science:
- Neuroscience
- Audiology
- Biomedical Engineering
Background:
- Long Latency Auditory Evoked Potentials (LLAEP) reflect neural activity in auditory pathways.
- Eye movement artifacts commonly interfere with LLAEP recordings.
- Limited channel equipment is prevalent in Brazilian clinical settings.
Purpose of the Study:
- To compare two artifact control methods for LLAEP capture using only two recording channels.
- To evaluate the efficacy of eye artifact subtraction versus rejection limit control.
- To assess the impact of these methods on LLAEP latency and amplitude.
Main Methods:
- Prospective study involving 10 normal-hearing individuals.
- Application of two LLAEP recording techniques: eye artifact subtraction and rejection limit control.
- Utilized a limited-channel recording setup.
Main Results:
- No statistically significant differences in LLAEP latency were found between the two methods.
- Amplitude values showed differences, with the rejection limit control method yielding greater amplitudes.
- Both artifact control methods proved efficient for LLAEP capture.
Conclusions:
- Both eye artifact subtraction and rejection limit control are effective for capturing LLAEP with limited channels.
- The rejection limit control method is advantageous for achieving higher amplitude values.
- These findings support the use of simpler artifact control methods in resource-limited clinical environments.
