Intensity Resolution in Individuals with Parkinson's Disease: Sensory and Auditory Memory Limitations

Autor/inn/en	Richardson, Kelly C.; Sussman, Joan E.
Titel	Intensity Resolution in Individuals with Parkinson's Disease: Sensory and Auditory Memory Limitations
Quelle	In: Journal of Speech, Language, and Hearing Research, 62 (2019) 9, S.3564-3581 (18 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
Schlagwörter	Diseases; Neurological Impairments; Acoustics; Task Analysis; Age Differences; Auditory Discrimination; Memory; Sensory Integration; Measurement; Computer Assisted Testing; Auditory Stimuli; Correlation + Suchen Sie Ihr Suchwort? Disease; Krankheit; Neurodegenerative Erkrankung; Akustik; Aufgabenanalyse; Age; Difference; Age difference; Altersunterschied; Gedächtnis; Sensorische Integration; Messverfahren; Auditive Stimulation; Korrelation
Abstract	Purpose: The purpose of the current study was to examine sensory and auditory memory limitations on intensity resolution in individuals with Parkinson's disease as compared to healthy older and younger adults. Method: Nineteen individuals with Parkinson's disease, 10 healthy age- and hearing-matched adults, and 10 healthy young adults were studied. The listeners participated in 2 intensity discrimination tasks: a lower memory load 4IAX task (sensory limitations) and a higher memory load ABX task (auditory memory limitations). Intensity resolution was examined across groups and tasks using a bias-free measurement of signal detectability known as "d'" ("d"-prime). Listeners also participated in a loudness scaling task where they were instructed to rate the loudness level of each signal intensity along the experimental continuum using a computerized 150-mm visual analog scale. Results: Intensity discrimination sensitivity ("d'") was significantly poorer in the 4IAX and ABX conditions for the individuals with Parkinson's disease, as compared to the older and younger controls. Furthermore, a significant age-related difference was identified for the loudness scaling condition. The younger controls rated most stimuli along the experimental continuum significantly louder as compared to the older controls and the individuals with Parkinson's disease. Conclusions: The present discrimination data suggest sensory and auditory memory limitations may contribute to the intensity resolution issues associated with Parkinson's disease. Age-related differences in loudness scaling will be reviewed. (As Provided).
Anmerkungen	American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2020/1/01