Exploring cervical vestibular evoked myogenic potential responses to different stimuli at different frequencies

Objetive: This study aimed to compare cervical vestibular evoked myogenic potentials (cVEMP) elicited by Tone Burst (TB) and Narrow Band Level-Specific Chirp (NB LS-CE Chirp) stimuli at 500, 1000, 2000, and 4000 Hz in healthy individuals. Methods: Thirty-two healthy participants (15 females, 17 males; mean age: 24.59 ± 1.93 years) underwent otoscopic examination, pure-tone audiometry, and cVEMP testing at 95 dB nHL using TB and NB LS-CE Chirp stimuli. P1 latency, N1 latency, and P1N1 amplitude were recorded. Results: At 500 Hz, both stimuli elicited responses in all subjects. Significant differences in P1 latency, N1 latency, and P1N1 amplitude were found between the stimuli at 500 and 1000 Hz (p <0.05). No significant differences were observed at 2000 and 4000 Hz (p> 0.05). Conclusion: NB LS-CE Chirp stimuli generate larger and earlier cVEMP responses than TB stimuli, particularly at lower frequencies, suggesting higher effectiveness for saccular assessment.