Mean proportion of synchronous responses (filled symbols) plotted as a function of delay between the two tones. The negative and positive delays represent tone pairs with LF leading and HF leading, respectively. The left column shows data for tones presented at 20 dB SL and the right column for tones at 85 dB SPL. Different rows show data for different frequency pairs. The open symbols show data for 40-ms tones replotted from the study by Wojtczak et al. (2012) for comparison. The solid and dashed curves show predictions by a model based on signal detection theory, for the 500- and 40-ms tones, respectively.
Geometrically averaged thresholds for detecting changes in the asynchrony between two tones plotted as a function of the standard asynchrony. The circles and triangles show thresholds for the LF and HF tone leading, respectively. The top panels show data for the tones presented at 20 dB SL, and the bottom panels for the tones at 85 dB SPL. Data for different frequency pairs are shown in different columns as indicated by the titles in the upper panels. The error bars represent the standard error of the mean.
Comparison of (geometric) mean thresholds for detecting changes in the asynchrony between tones with a duration of 500 ms (filled symbols) and 40 ms (open symbols), for the same listeners. The 40-ms data are replotted from the study by Wojtczak et al. (2012) . The upper panels show data for tone pairs with LF leading, and the lower panels for tones with HF leading. The data are for tones presented at 20 dB SL. The error bars show the standard error of the mean.
As in Fig. 3 but for tones at 85 dB SPL.
Data (plain bars indicated by d in the legend) and predictions (hatched bars indicated by p) from the model based on signal detection theory described in the Appendix in Wojtczak et al. (2012) . Both sets of bars represent the geometric mean of data (and predictions) for three listeners. The predictions were obtained using the synchronous response functions measured in Experiment 1. The lower and upper panels are for tones at 20 dB SL and 85 dB SPL, respectively, and the different columns show the results for different frequency pairs, as indicated on top of the upper panels. The error bars represent the standard error of the mean.
Correlation between the (geometric) mean predicted and measured asynchrony-detection thresholds. The solid line represents orthogonal regression which takes into account variability in both thresholds. The dashed line has a slope of 1 and represents ideal agreement between the data and predictions.
Thresholds for asynchrony detection (plain bars) and discrimination from the standard asynchrony of 60 ms (hatched bars), averaged geometrically for five listeners, for different ramp-duration configurations: (10/10)—10-ms onset and offset ramps, (10/250)—10-ms onset and 250-ms offset ramps, (250/10)—250-ms onset and 10-ms offset ramps, and (250/250)—250-ms onset and offset ramps. The upper and lower panels show data for 20 dB SL and 85 dB SPL, respectively. Data for different frequency pairs are shown in different columns. The error bars represent the standard error of the mean.
Data replotted from Fig. 1 (symbols) with predictions (dashed curves) by the model based on a broadly tuned monaural coincidence detector.
Geometrically averaged predicted (open symbols) and measured (filled symbols replotted from Fig. 2 ) asynchrony-discrimination thresholds for three listeners who participated in Experiments 1 and 2. The predictions were made based on the model fits to the individual data obtained in Experiment 1. The error bars show the standard error of the mean.
Average values of best-fitting model parameters.
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