Original Research
Speech-evoked cortical auditory responses in children with normal hearing
Submitted: 19 February 2013 | Published: 27 November 2013
About the author(s)
Aseel Almeqbel, Hearing and Speech Sciences Department, Health Science Center, Kuwait University, KuwaitAbstract
Method: CAEPs were recorded from 18 school-aged children with normal hearing, tested in two groups: younger (5 - 7 years) and older children (8 - 12 years). Cortical responses differed in their P1 and N2 latencies and amplitudes in response to /m/, /g/ and /t/ sounds (from low-, mid- and high-frequency regions, respectively). The largest amplitude of the P1 and N2 component was for /g/ and the smallest was for /t/. The P1 latency in both age groups did not show any significant difference between these speech sounds. The N2 latency showed a significant change in the younger group but not in the older group. The N2 latency of the speech sound /g/ was always noted earlier in both groups.
Conclusion: This study demonstrates that spectrally different speech sounds are encoded differentially at the cortical level, and evoke distinct CAEP response patterns. CAEP latencies and amplitudes may provide an objective indication that spectrally different speech sounds are encoded differently at the cortical level.
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Crossref Citations
1. SPEECH-EVOKED CORTICAL POTENTIALS IN NORMALHEARING CHILDREN AND ADULTS USING THREE PHONEMES
Prawin Kumar, Himanshu Sanju, Vaishnavi Bohra, Astha Khanna
Journal of Hearing Science vol: 5 issue: 2 first page: 9 year: 2015
doi: 10.17430/894257