Abstract:
:In contrast to the transient (N1-P2) and steady-state (<20 Hz) cortical responses, neither the transient (auditory brain stem response) nor the steady-state (80 Hz) brain stem responses show the binaural masking level difference (BMLD). This study determined behavioral and 40-Hz auditory steady-state response (ASSR) BMLDs for both signal and noise interaural inversions. Results showed clear behavioral BMLD but no 40-Hz ASSR BMLD. However, ASSR amplitudes were significantly smaller in dichotic compared with diotic conditions. Thus, although 40-Hz ASSR thresholds do not reflect the BMLD, the amplitude suppression under dichotic conditions may be a precursor to the subsequent <20-Hz ASSR and behavioral BMLDs.
journal_name
Ear Hearjournal_title
Ear and hearingauthors
Ishida IM,Stapells DRdoi
10.1097/AUD.0b013e3181b61cc8subject
Has Abstractpub_date
2009-12-01 00:00:00pages
713-5issue
6eissn
0196-0202issn
1538-4667journal_volume
30pub_type
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