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Revista CEFAC

versão On-line ISSN 1982-0216

Resumo

BECKER, Karine Thaís et al. The handedness effect in speech test in noise in normal hearing subjects. Rev. CEFAC [online]. 2011, vol.13, n.6, pp.1048-1055.  Epub 03-Jun-2011. ISSN 1982-0216.  http://dx.doi.org/10.1590/S1516-18462011005000044.

PURPOSE: to check the handedness effects in monaural test using sentences as stimulus with background noise in adults with normal hearing. METHOD: 81 subjects, with age between 18 and 44, divided in two groups according to handedness - 45 right-handers and 36 left-handers, were evaluated through the Portuguese Sentences Lists test (PSL) then we obtained the signal to noise ratio for each ear. RESULTS: the mean values obtained as for the signal to noise ratio on right ear for the right- and left -handed subjects were respectively -6.5 dB and -4.5 dB. On the left ear the computed results were -7.0 dB and -7.5 dB. The right ears showed significantly poor results in both right-handed subjects, as well as in left-handers. As left-handed subjects right ears was significantly poor compared to that of right-handers. CONCLUSION: there is difference in speech recognition with background noise in right- and left -handed subjects. The right ears showed poor performance in both groups, and this worsening is more emphasized in the left-handers.

Palavras-chave : Hearing; Speech; Speech Perception; Functional Laterality; Dominance, Cerebra.

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