TY - JOUR
T1 - Modulation Detection Interference
T2 - Across-frequency processing and auditory grouping
AU - Yost, William A.
AU - Sheft, Stanley
N1 - Funding Information:
This research was supported by grants from the National Institute on Deafness and Other Communication Disorders and the Air Force Office of Scientific Research. We would like to thank our colleagues at the
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 1994/9
Y1 - 1994/9
N2 - Modulation Detection Interference (MDI) is the loss of sensitivity in processing amplitude modulation of a probe tone when a masker is similarly modulated. MDI was measured in four experiments to investigate two past claims concerning MDI: 1) That MDI represents across-spectral processing, and 2) that MDI is the consequence of the auditory system using common patterns of amplitude modulation to group spectral components into a single auditory source. Experiment I studied MDI when the envelope phase of the masker and probe modulators were different and was used to address the issue of the extent to which MDI is a consequence of spectral grouping based on common amplitude modulation. Measures of MDI for conditions in which the frequency separation between the probe and masker carriers was varied (Experiment II), estimates of modulation depth discrimination (Experiment III), and signal detection thresholds for brief sinusoidal signals masked by amplitude modulated tones (Experiment IV) were all used to address issues related to across-spectral processing of amplitude modulation. The conclusions of these studies is that MDI is largely an across-frequency phenomenon and that the role of auditory grouping based on a common pattern of modulation can not be ruled out as having a relationship to MDI.
AB - Modulation Detection Interference (MDI) is the loss of sensitivity in processing amplitude modulation of a probe tone when a masker is similarly modulated. MDI was measured in four experiments to investigate two past claims concerning MDI: 1) That MDI represents across-spectral processing, and 2) that MDI is the consequence of the auditory system using common patterns of amplitude modulation to group spectral components into a single auditory source. Experiment I studied MDI when the envelope phase of the masker and probe modulators were different and was used to address the issue of the extent to which MDI is a consequence of spectral grouping based on common amplitude modulation. Measures of MDI for conditions in which the frequency separation between the probe and masker carriers was varied (Experiment II), estimates of modulation depth discrimination (Experiment III), and signal detection thresholds for brief sinusoidal signals masked by amplitude modulated tones (Experiment IV) were all used to address issues related to across-spectral processing of amplitude modulation. The conclusions of these studies is that MDI is largely an across-frequency phenomenon and that the role of auditory grouping based on a common pattern of modulation can not be ruled out as having a relationship to MDI.
KW - Across-spectral processing
KW - Amplitude modulation
KW - Modulation Detection Interference
KW - Sound source determination
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U2 - 10.1016/0378-5955(94)90126-0
DO - 10.1016/0378-5955(94)90126-0
M3 - Article
C2 - 7806484
AN - SCOPUS:0027981830
SN - 0378-5955
VL - 79
SP - 48
EP - 58
JO - Hearing Research
JF - Hearing Research
IS - 1-2
ER -