title: The dichotic lead effect of CV syllables in sensorineural hearing loss.
abstract: This study investigated central processing of dichotic CV syllables on 10 patients with sensorineural hearing losses. Porter's Dichotic Lag Index (DLI) was established for each S at asynchronies of alignment of 30, 60, 90, and 150 msec by presenting the lagging syllable first to the R and then to the L ear. Ss were required to record a response to both CV syllables. Patients exhibited a dichotic lead advantage while 10 normal-hearing control Ss exhibited a dichotic lag advantage. A R ear advantage was not abolished when the lagging syllable was presented to the L ear and was not enhanced when the lagging syllable was presented to the R ear. The lead advantage of the patients may be attributed to the distortion of acoustic encoding for speech, causing a reduction in the special processing requirements of CV syllables. The reduction in special processing may then be responsible for the shift in temporal advantage.
mesh_terms: D004007:Dichotic Listening Tests; D007839:Functional Laterality; D006319:Hearing Loss, Sensorineural / Q000503:physiopathology*; D006801:Humans; D010470:Perceptual Masking; D010700:Phonetics; D013061:Speech Acoustics; D013067:Speech Perception