Perceptual Encoding in Auditory Brainstem Responses: Effects of Stimulus Frequency

Autor/inn/en	Tabachnick, Alexandra R.; Toscano, Joseph C.
Titel	Perceptual Encoding in Auditory Brainstem Responses: Effects of Stimulus Frequency
Quelle	In: Journal of Speech, Language, and Hearing Research, 61 (2018) 9, S.2364-2375 (12 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/2018_JSLHR-H-17-0486
Schlagwörter	Auditory Perception; Acoustics; Brain Hemisphere Functions; Auditory Stimuli; Measurement Equipment; Cognitive Processes; Measurement Techniques + Suchen Sie Ihr Suchwort? Auditive Wahrnehmung; Akustische Wahrnehmung; Akustik; Auditive Stimulation; Messinstrument; Cognitive process; Kognitiver Prozess; Messtechnik
Abstract	Purpose: A central question about auditory perception concerns how acoustic information is represented at different stages of processing. The auditory brainstem response (ABR) provides a potentially useful index of the earliest stages of this process. However, it is unclear how basic acoustic characteristics (e.g., differences in tones spanning a wide range of frequencies) are indexed by ABR components. This study addresses this by investigating how ABR amplitude and latency track stimulus frequency for tones ranging from 250 to 8000 Hz. Method: In a repeated-measures experimental design, listeners were presented with brief tones (250, 500, 1000, 2000, 4000, and 8000 Hz) in random order while electroencephalography was recorded. ABR latencies and amplitudes for Wave V (6-9 ms) and in the time window following the Wave V peak (labeled as "Wave VI"; 9-12 ms) were measured. Results: Wave V latency decreased with increasing frequency, replicating previous work. In addition, Waves V and VI amplitudes tracked differences in tone frequency, with a nonlinear response from 250 to 8000 Hz and a clear log-linear response to tones from 500 to 8000 Hz. Conclusions: Results demonstrate that the ABR provides a useful measure of early perceptual encoding for stimuli varying in frequency and that the tonotopic organization of the auditory system is preserved at this stage of processing for stimuli from 500 to 8000 Hz. Such a measure may serve as a useful clinical tool for evaluating a listener's ability to encode specific frequencies in sounds. (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