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D E Ellison

Publications and source records attributed to D E Ellison.

5 recordsLinked to original sources
PubMed1989

Stop-consonant recognition for normal-hearing listeners and listeners with high-frequency hearing loss. I: The contribution of selected frequency regions.

The purpose of this study is to specify the contribution of certain frequency regions to consonant place perception for normal-hearing listeners and listeners with high-frequency hearing loss, and to characterize the differences in stop-consonant place perception among these listeners. Stop-consonant recognition and error patterns were examined at various speech-presentation levels and under conditions of low- and high-pass filtering. Subjects included 18 normal-hearing listeners and a homogeneous group of 10 young, hearing-impaired individuals with high-frequency sensorineural hearing loss. Differential filtering effects on consonant place perception were consistent with the spectral composition of acoustic cues. Differences in consonant recognition and error patterns between normal-hearing and hearing-impaired listeners were observed when the stimulus bandwidth included regions of threshold elevation for the hearing-impaired listeners. Thus place-perception differences among listeners are, for the most part, associated with stimulus bandwidths corresponding to regions of hearing loss.

Adult↗
PubMed1987

A new technique to maintain closed-suction drainage catheter function.

Closed-suction catheter drains offer many advantages over previously used systems in head and neck surgery. Occlusion of drains with either tissue fragments of thrombus, however, is a relatively common problem. Several methods have been proposed to restore flow to obstructed drains. These methods are reviewed and a new method is described that is efficacious, avoids wound contamination, and is relatively inexpensive.

Drainage↗
PubMedDate not supplied

Tumor recurrence within myocutaneous flaps.

Myocutaneous flaps have become increasingly popular in reconstructive head and neck surgery. As surgeons have gained familiarity with them, many of the advantages, limitations, and complications of these flaps have become apparent. A rare but serious complication of myocutaneous flaps is recurrent tumor within the pedicle. Three cases of squamous cell carcinoma involving three different myocutaneous flaps are presented and the literature is reviewed. Possible mechanisms of tumor metastasis to myocutaneous flap pedicles are discussed. Surgeons must be aware of the possibility of tumor involvement of reconstructive flaps to facilitate early diagnosis and aggressive treatment.

Adult↗