title: Auditory mismatch negativity: detecting spectral contrasts in a modulated noise.
abstract: The ability to detect sinusoidal spectral envelope from an unmodulated (flat) spectrum has shown a strong correlation with speech perception in quiet and noisy listening conditions in normal hearing, hearing-impaired, and cochlear implant users. In this study, the mismatch negativity (MMN) was collected from 10 normal-hearing adult listeners and used to determine if modulation detection thresholds derived electrophysiologically correlate with the psychophysically measured spectral modulation detection thresholds. MMNs were present for most participants with spectral contrasts of 10 and 20 dB, suggesting that the MMN may be a promising neurophysiologic measure of spectral envelope perception when nonbehavioral measures are desired.
authors: University of Northern Colorado, Campus Box 140 (ASLS), Greeley, CO 80639, USA. tina.stoody@unco.edu
authors: Tina M
authors: TM
authors: Stoody
authors: Aniket A
authors: AA
authors: Saoji
authors: Samuel R
authors: SR
authors: Atcherson
mesh_terms: D000328:Adult; D001288:Attention / Q000502:physiology; D001303:Auditory Cortex / Q000502:physiology; D001309:Auditory Threshold / Q000502:physiology; D003265:Contingent Negative Variation / Q000502:physiology*; D004569:Electroencephalography; D005072:Evoked Potentials, Auditory / Q000502:physiology; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D008144:Loudness Perception / Q000502:physiology; D008297:Male; D010470:Perceptual Masking / Q000502:physiology*; D012016:Reference Values; D012815:Signal Processing, Computer-Assisted; D013018:Sound Spectrography; D013061:Speech Acoustics; D013067:Speech Perception / Q000502:physiology*