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Cortical auditory evoked potential: evaluation of speech detection and estimation of hearing thresholds in hearing aid users

Grant number: 11/19556-3
Support Opportunities:Regular Research Grants
Duration: January 01, 2012 - December 31, 2013
Field of knowledge:Health Sciences - Speech Therapy
Principal Investigator:Alessandra Spada Durante
Grantee:Alessandra Spada Durante
Host Institution: Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP). Fundação Arnaldo Vieira de Carvalho. São Paulo , SP, Brazil
Associated researchers:Katia de Almeida ; Margarita Bernal Wieselberg


Cortical auditory evoked potentials provide advantages over the more popular techniques such as brainstem auditory evoked potentials. The answers are captured near the site where they are generated, providing waves of greater amplitude, which may be registered with the subject in a state of alert and, especially, for use with both tonal and speech stimuli. These potentials provide valuable information on the perception of auditory stimuli. The advancement of newborn hearing screening programs allows access to more early intervention, and the increasing aging population is exposed to a greater cognitive and auditory impairment. These movements generate a growing demand for techniques for objective evaluation of auditory perception in individuals unable to respond by means of behavioral techniques that do or do not wear a hearing aid. With this approach, the Australian National Acoustic Laboratory (NAL) has developed the "HEARLab" equipment with innovative technology that utilizes electrodes with pre-amplifier, especially designed to significantly reduce electrical interference, and provide automatic statistical analysis of cortical response, that enables its clinical application. The objective of this project is to develop a protocol for the use of cortical auditory evoked potential in automatic analysis equipment response, in the estimation of hearing thresholds and speech detection in the selection process and verification of hearing aids in individuals with hearing loss. The assessment will include 60 adults, 30 with normal hearing and 30 with moderate to severe sensorineural hearing loss. LLAEP tonal and speech stimuli will be captured and recorded. This study will allow the use of valuable clinical tools in the selection and verification of hearing aids in difficult subjects to be tested, including infants, young children who have not developed language skills, patients with multiple disorders, as well as adults and older people unable to respond. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
DURANTE, ALESSANDRA SPADA; WIESELBERG, MARGARITA BERNAL; ROQUE, NAYARA; CARVALHO, SHEILA; PUCCI, BEATRIZ; GUDAYOL, NICOLLY; DE ALMEIDA, KATIA. Estimativa do limiar auditivo em adultos com perda auditiva por meio de um sistema automatizado de detecção do potencial evocado auditivo cortical. Brazilian Journal of Otorhinolaryngology, v. 83, n. 2, p. 147-154, . (11/19556-3)
LILIAN SANCHES OLIVEIRA; DAYANE DOMENEGHINI DIDONÉ; ALESSANDRA SPADA DURANTE. Estimativa do limiar de potenciais evocados auditivos corticais automatizados em recém-nascidos. Brazilian Journal of Otorhinolaryngology, v. 85, n. 2, p. 206-212, . (11/19556-3)
DAYANE DOMENEGHINI DIDONÉ; LILIAN SANCHES OLIVEIRA; PRICILA SLEIFER; RUDIMAR DOS SANTOS RIESGO; MICHELE VARGAS GARCIA; KÁTIA DE ALMEIDA; ALESSANDRA SPADA DURANTE. Efeito do estado atencional na detecção automática das respostas auditivas corticais em neonatos. Audiol., Commun. Res., v. 23, . (11/19556-3)

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