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Full-Text Articles in Medicine and Health Sciences

The Effects Of Practice On The Concurrent Performance Of A Speech And Postural Task In Persons With Parkinson Disease And Healthy Controls, K. Bo Foreman, Stuart Sondrup, Christopher Dromey, Eon Jarvis, Shawn Nissen, Leland E. Dibble May 2013

The Effects Of Practice On The Concurrent Performance Of A Speech And Postural Task In Persons With Parkinson Disease And Healthy Controls, K. Bo Foreman, Stuart Sondrup, Christopher Dromey, Eon Jarvis, Shawn Nissen, Leland E. Dibble

Faculty Publications

Purpose. Persons with Parkinson disease (PD) demonstrate deficits in motor learning as well as bidirectional interference (the performance of one task concurrently interferes with the performance of another task) during dual-task performance. Few studies have examined the practice dosages necessary for behavioral change in rehabilitation relevant tasks. Therefore, to compare the effects of age and PD on motor learning during dual-task performance, this pilot study examined persons with PD as well as neurologically healthy participants during concurrent performance of postural and speaking tasks. Methods. Seven persons with PD and 7 healthy age-matched and 10 healthy young control subjects …


Time-Frequency Analysis Of Transient-Evoked Otoacoustic Emissions In Children Exposed To Carboplatin Chemotherapy, Shaum Bhagat, Johnnie Bass, Ibrahim Qaddoumi, Rachel Brennan, Matthew Wilson, Jianrong Wu, Carlos-Rodriguez Galindo, Alessia Paglialonga, Gabriella Tognola Jan 2013

Time-Frequency Analysis Of Transient-Evoked Otoacoustic Emissions In Children Exposed To Carboplatin Chemotherapy, Shaum Bhagat, Johnnie Bass, Ibrahim Qaddoumi, Rachel Brennan, Matthew Wilson, Jianrong Wu, Carlos-Rodriguez Galindo, Alessia Paglialonga, Gabriella Tognola

Faculty Publications

The aims of this study were to characterize and quantify time-frequency changes in transient-evoked otoacoustic emissions (TEOAEs) recorded in children diagnosed with retinoblastoma who were receiving carboplatin chemotherapy. A signal processing technique, the wavelet transform (WT), was used to analyze TEOAE waveforms in narrow-band frequency components. Ten children (aged 3–72 months) diagnosed with unilateral or bilateral retinoblastoma were enrolled in the study. TEOAEs were acquired from the children with linear sequences of 70 dB peak equivalent SPL clicks. After WT analysis, TEOAE energy, latency and normalized energy in the narrow-band frequency components were compared before and during carboplatin chemotherapy treatment …


Assessing Correlations Between Lingual Movements And Formants, Christopher Dromey, Gwi-Ok Jang, Kristi Hollis Jan 2013

Assessing Correlations Between Lingual Movements And Formants, Christopher Dromey, Gwi-Ok Jang, Kristi Hollis

Faculty Publications

First and second formant histories have been used in studies of both normal and disordered speech to indirectly measure the activity of the vocal tract. The purpose of the present study was to determine the extent to which formant measures are reflective of lingual movements during diphthong production. Twenty native speakers of American English from the western United States produced four diphthongs in a sentence context while tongue movement was measured with a magnetic tracking system. Correlations were computed between the vertical tongue movements and the first formant, as well as between the anteroposterior movements and the second formant during …