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Full-Text Articles in Speech Pathology and Audiology
The Effect Of Masking On The Acoustic Reflex Threshold, Nancy E. Aldrich
The Effect Of Masking On The Acoustic Reflex Threshold, Nancy E. Aldrich
Loma Linda University Electronic Theses, Dissertations & Projects
This study investigated the effect of masking noise on the threshold for stapedial reflex. It has been shown that masking which shifts the hearing threshold causes a loudness function typical of recruitment. It was hypothesized that the stapedial reflex threshold remains the same in a masked situation as in the unmasked situation . It was suggested that this demonstrates recruitment in that the presence of noise reduces the range between hearing thresholds and stapedial reflex thresholds.
Ten subjects, with no known hearing loss or pathology involving the ear or reflex arc were used in this study. A 1000 Hz tone …
Subvocalization And Stuttering, Laverne Brent Gohl
Subvocalization And Stuttering, Laverne Brent Gohl
Loma Linda University Electronic Theses, Dissertations & Projects
Twenty-six subjects, thirteen stutterers and thirteen fluent speakers, were matched by age, sex and educational background. None had any history of neurosurgery, neuropathology or debilitating injury to the head or neck.
Two GRASS silver chloride electrodes were attached to the chin and inferior surface of the lower lip of each subject. This recording site was chosen because, presumably, it would detect activity of the quadratus labii inferioris, a muscle involved in the articulation of labial phonemes, permitting a distinction between the labial and nonlabial ensembles and, therefore, speech and nonspeech oral activity. EMG recordings, measuring covert phonetic activity, were obtained …