An Electrophysiological Measure of Temporal Resolution in Normal Subjects Using Frequency Modulated Signals This investigation was conducted to determine whether an exogenous event-related potential called the mismatch negativity (MMN) would change systematically in response to frequency-modulated signals with varying temporal properties. Both N1 and P2 waveforms were recorded for 50-ms frequency-modulated signals from normal hearing listeners. The standard stimuli for this investigation were ... Research Article
Research Article  |   June 01, 2002
An Electrophysiological Measure of Temporal Resolution in Normal Subjects Using Frequency Modulated Signals
 
Author Affiliations & Notes
  • Devin L. McCaslin, PhD
    The Ohio State University, Columbus
    Henry Ford Hospital, Division of Audiology K-8, 2799 West Grand Blvd., Detroit, MI 48202.
  • Lawrence L. Feth
    The Ohio State University, Columbus
  • Gary P. Jacobson
    Henry Ford Hospital, Division of Audiology K-8, 2799 West Grand Blvd., Detroit, MI 48202.
  • Pamela J. Mishler
    Veterans Affairs Medical Center, Dayton, OH
  • Corresponding author: e-mail: dmccas11@hfhs.org
  • Currently affiliated with the Division of Audiology, Department of Otolaryngology-Head and Neck Surgery, Henry Ford Hospital, Detroit, MI.
    Currently affiliated with the Division of Audiology, Department of Otolaryngology-Head and Neck Surgery, Henry Ford Hospital, Detroit, MI.×
Article Information
Hearing & Speech Perception / Hearing Disorders / Research Articles
Research Article   |   June 01, 2002
An Electrophysiological Measure of Temporal Resolution in Normal Subjects Using Frequency Modulated Signals
American Journal of Audiology, June 2002, Vol. 11, 42-49. doi:10.1044/1059-0889(2002/007)
History: Received March 14, 2002 , Accepted June 17, 2002
 
American Journal of Audiology, June 2002, Vol. 11, 42-49. doi:10.1044/1059-0889(2002/007)
History: Received March 14, 2002; Accepted June 17, 2002

This investigation was conducted to determine whether an exogenous event-related potential called the mismatch negativity (MMN) would change systematically in response to frequency-modulated signals with varying temporal properties. Both N1 and P2 waveforms were recorded for 50-ms frequency-modulated signals from normal hearing listeners. The standard stimuli for this investigation were continuous sweep tones with center frequencies of 1000 Hz that traversed a frequency range of 200 Hz in a single step. The rare stimuli were signals that traversed the same frequency range in two, four, six, or eight discrete steps. Results suggest that for the 10 participants, 1) the mean MMN peak-to-peak amplitude and mean area decreased significantly with decreases in step duration, 2) MMN area amplitude was the best indicator of psychophysical performance for the two magnitude measures, and 3) MMN onsets and peak latencies did not show either a significant increase or decrease in latency as step duration decreased.

Acknowledgments
This work was supported by National Research Training Award T32 DC00051-01A1 from the National Institutes of Health.
This paper was presented at the at the 21st Midwinter Research Meeting of the Association for Research in Otolaryngology, St. Petersburg Beach, FL, Feb. 15–20, 1998.
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