TY - JOUR
T1 - Time-efficient measures of auditory frequency selectivity
AU - Charaziak, Karolina K.
AU - Souza, Pamela
AU - Siegel, Jonathan H.
N1 - Funding Information:
This work was supported by NIDCD grant DC006014 and North-western University. We thank Dr. Aleksander S ę for providing the swept-noise fast-PTC software and for help with implementing the method in our laboratory. We thank Dr. Sumitrajit Dhar, Dr. Beverly Wright, and Dr. Steven Zecker for fruitful discussions, and Kathleen Dunckley for reading the manuscript. We are also grateful to Dr. Andrew Oxenham and Dr. Christopher Shera for sharing their data. Preliminary data from this study were presented at the 34th MidWinter Meeting of the Association for Research in Otolaryngology in Baltimore, Maryland, USA, February 2011.
PY - 2012/4
Y1 - 2012/4
N2 - Objective: The objective of this study was to compare two recently proposed methods for fast measurements of psychophysical tuning curves (fast-PTCs) in terms of resulting tuning curve features and training effects. Design: Fast-PTCs with swept-noise (SN) and gated-noise (GN) maskers were measured at signal frequencies of 500, 1000, 2000, and 4000 Hz. The effect of amplitude modulating the signal in the GN condition was evaluated. Two PTC runs were obtained for each condition to assess training effects. Study sample: Eight normally-hearing young adults participated in the study. Results: The SN and GN methods resulted in similar estimates of frequency selectivity when training effects were considered. Amplitude modulating the tone in the GN method reduced the effect of training. On average, SN-PTCs were most repeatable compared to the two other methods and they were not affected by training. Estimation of the shift in the PTC tip frequency was not affected by the measurement method or training effects. Fast-PTC methods resulted in similar estimates of tuning as compared to published notched-noise data. Conclusions: The SN method and the GN procedure with amplitude modulated signals allowed for time-efficient estimation of frequency selectivity that was unaffected by training.
AB - Objective: The objective of this study was to compare two recently proposed methods for fast measurements of psychophysical tuning curves (fast-PTCs) in terms of resulting tuning curve features and training effects. Design: Fast-PTCs with swept-noise (SN) and gated-noise (GN) maskers were measured at signal frequencies of 500, 1000, 2000, and 4000 Hz. The effect of amplitude modulating the signal in the GN condition was evaluated. Two PTC runs were obtained for each condition to assess training effects. Study sample: Eight normally-hearing young adults participated in the study. Results: The SN and GN methods resulted in similar estimates of frequency selectivity when training effects were considered. Amplitude modulating the tone in the GN method reduced the effect of training. On average, SN-PTCs were most repeatable compared to the two other methods and they were not affected by training. Estimation of the shift in the PTC tip frequency was not affected by the measurement method or training effects. Fast-PTC methods resulted in similar estimates of tuning as compared to published notched-noise data. Conclusions: The SN method and the GN procedure with amplitude modulated signals allowed for time-efficient estimation of frequency selectivity that was unaffected by training.
KW - Equivalent rectangular bandwidth
KW - Frequency selectivity
KW - Normally-hearing
KW - Psychophysical tuning curves
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U2 - 10.3109/14992027.2011.625982
DO - 10.3109/14992027.2011.625982
M3 - Article
C2 - 22107443
AN - SCOPUS:84858210687
SN - 1499-2027
VL - 51
SP - 317
EP - 325
JO - International Journal of Audiology
JF - International Journal of Audiology
IS - 4
ER -