IJCRR - 7(7), April, 2015
AUDITORY BRAINSTEM PROCESSING OF COMPLEX SPEECH SOUNDS IN HIGH RISK INFANTS-A PRELIMINARY STUDY
Author: Muhammed Ayas, Hakam Yaseen, Rajashekhar B.
Background: The ability of the auditory brainstem process for complex speech sound is precursor for the normal language development. Infants who are born prematurely are at high risk for hearing loss and should be evaluated for their hearing at the earliest to identify the hearing related disorders.
Objectives: The aim of the study was to explore how an immature auditory brainstem responds for the complex acoustic stimuli such as speech sounds. Method: Twelve high risk infants were recruited in the prospective, observational study. Speech Evoked Auditory Brainstem Response (SEABR) was recorded in all the high risk infants using stop consonant/da/.
Results: The results of the study were promising in such a way that the onset and sustained responses were encoded in the premature auditory brainstem with greater fidelity.
Conclusion: The scalp-recorded SEABR offers a unique window in understanding how the human auditory brainstem represents key elements of the speech signal. From the current study, we draw the inference that all the high risk infants should undergo a SEABR recording and such findings would enable the clinicians and researchers to dwell in to the possible onset of APD in these high risk populations.
Keywords: Speech evoked auditory brainstem response (SEABR), High risk infants (HR infants), Frequency following response (FFR), Auditory processing disorders (APD), Language development
Muhammed Ayas, Hakam Yaseen, Rajashekhar B.. AUDITORY BRAINSTEM PROCESSING OF COMPLEX SPEECH SOUNDS IN HIGH RISK INFANTS-A PRELIMINARY STUDY International Journal of Current Research and Review. 7(7), April, 22-27
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