Effect of Caffeine on Otoacoustic Emissions

Abstract

Introduction Caffeine is consumed everyday in a variety of ways by a large population around the world, including coffee, tea, and soft drinks. Therefore, there is a significant need to explore the effects of caffeine on human auditory system. The present study aimed to investigate the effect of caffeine on cochlea using distortion product otoacoustic emission (DPOAE). Materials and Methods Thirty-three young adults were recruited for the study. The effect of caffeine on cochlea was assessed using DPOAE at frequencies between 1 to 10 kHz before and after caffeine consumption. Results The signal to noise ratio of DPOAE was compared before and after coffee intake, which revealed no significant differences. Conclusion The current study results suggest that caffeine has no effect on cochlear functioning.

The effect of coffee on contralateral suppression of transient evoked otoacoustic emissions

“…Results of the present study showed no significant effect of coffee on the amplitude of TEOAE. This finding is consistent with those of Drepath et al 23 which showed no effect of coffee on the amplitude of DPOAEs in humans. These findings suggests no effect of caffeine on the amplitude of OAEs in humans.…”

“…In contrast, Bobbin 27 reported an effect of caffeine on the amplitude of DPOAE in animal study. Therefore, although Drepath et al 23 reported no effect of coffee on the amplitude of OAE in humans; similar investigations should be conducted before generalizing the results. Thus, the first objective of the present study was to investigate the effect of coffee on the amplitude of TEOAE.…”

“…[24][25][26] Therefore, caffeine could be assumed to have a negative effect on the amplitude of OAEs. Recently, Drepath et al 23 reported no significant effect of coffee on the amplitude of DPOAE. In contrast, Bobbin 27 reported an effect of caffeine on the amplitude of DPOAE in animal study.…”

“…Studies have been carried out to understand the effect of caffeine on auditory evoked potentials, [11][12][13][14][15][16][17][18][19][20] speech perception, 21,22 and otoacoustic emissions. 23 Few studies have investigated the effect of caffeine on the auditory brainstem response (ABR). Findings from these investigations have showed significantly shorter latency and larger amplitude for ABR peaks following caffeine ingestion.…”

The effect of coffee on contralateral suppression of transient evoked otoacoustic emissions

“…Studies have been carried out to investigate the effect of caffeine on auditory evoked potentials, 11 – 20 speech perception, 21 , 22 and OAEs. 23 Few studies have investigated the effect of caffeine on the auditory brainstem response (ABR). Findings from these investigations have showed significantly shorter latency and larger amplitude for ABR peaks following caffeine ingestion.…”