Comparison of click and CE-chirp® stimuli on Brainstem Auditory Evoked Potential recording

Revista da Sociedade Brasileira de Fonoaudiologia

Pontifícia Universidade Católica de São Paulo, São Paulo, Brasil¹  Universidade Católica de São Paulo, São Paulo, Brasil¹  Lewis, Doris Ruthi¹  Rodrigues, Gabriela Ribeiro Ivo¹ 

关键词: Evoked potentials;    auditory;    Evoked potentials;    auditory;    brain stem;    Electrophysiology;    Hearing;    Hearing tests;   

DOI  :  10.1590/S1516-80342012000400008

来源: Sociedade Brasileira de Fonoaudiologia

【 摘 要 】

PURPOSE: To compare the latencies and amplitudes of wave V on the Brainstem Auditory Evoked Potential (BAEP) recording obtained with click and CE-chirp® stimuli and the presence or absence of waves I, III and V in high intensities. METHODS: Cross-sectional study with 12 adults with audiometric thresholds <15 dBHL (24 ears) and mean age of 27 years. The parameters used for the recording with both stimuli in intensities of 80, 60, 40, 20 dBnHL were alternate polarity and repetition rate of 27.1 Hz. RESULTS: The CE-chirp® latencies for wave V were longer than click latencies at low intensity levels (20 and 40 dBnHL). At high intensity levels (60 and 80 dBnHL), the opposite occurred. Larger wave V amplitudes were observed with CE-chirp® in all intensity levels, except at 80 dBnHL. CONCLUSION: The CE-chirp® showed shorter latencies than those observed with clicks at high intensity levels and larger amplitudes at all intensity levels, except at 80 dBnHL. The waves I and III tended to disappear with CE-chirp® stimulation.

【 授权许可】

Unknown