000			02231caa a2200205 4500
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022			_a1558-9137
100			_aDhatri S. Devaraju
245		0	_aBehavioral and Neural Correlates of Auditory n-Back Task in Adults With and Without Stuttering
260			_bASHA _c2019
270			_aAll India Institute of Speech and Hearing, Manasagangothri, Mysuru, India
300			_a471-482
490			_vVolume 28 Issue 2s
520			_aPurpose: Adults with stuttering (AWS) exhibit compromised phonological working memory abilities, poor central auditory processing, and impaired auditory processing especially during overt speech production tasks. However, these tasks are sensitive to language disturbances already found in them. Thus, in this study, monosyllables were used ruling out the language effects, and auditory working memory ability was evaluated in AWS using the n-back task. In specific, the auditory sensory input of the working memory mechanism was evaluated. Method:Thirty-two participants, 16 each of AWS and adults with no stuttering (AWNS), performed behavioral auditory 1-back and 2-back tasks. The long latency responses were also recorded during no-back and 2-back conditions from 64 electrode sites.Results:Results revealed no significant differences between the groups in any of the behavioral parameters such as reaction time, accuracy, false alarm rate, or d′. N1 amplitude modulation was noted in AWNS, which was absent in AWS. The segmentation analysis showed a left hemisphere–oriented topographical distribution in the N2 region in AWS irrespective of conditions, whereas the scalp topography was right hemisphere–oriented with the involvement of parietal channels in AWNS. The timing differences existed between AWS and AWNS in the intervals that a topographical distribution lasted in all throughout the time window of analysis.Conclusion:The results suggest altered neural pathway and hemispheric differences during auditory working memory tasks in AWS.
700			_aAjith Kumar, U
700			_aSantosh Maruthy
773			_aAmerican Journal of Audiology
856			_uhttps://doi.org/10.1044/2019_AJA-IND50-18-0101
942			_cFJAS _yFJAS
999			_c17726 _d17726