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. Author manuscript; available in PMC: 2024 Apr 4.
Published in final edited form as: Behav Res Methods. 2023 Jun 8;56(3):1433–1448. doi: 10.3758/s13428-023-02101-9

Figure 5. Validity of web-based testing for demonstrating the co-modulation masking release (CMR) effect.

Figure 5.

(A) CMR was measured by assessing the SNR thresholds for detecting 4 kHz tones in modulated 1-ERB-wide on-band noise for varying configurations of 1-ERB-wide noise flankers (2-ERB gap between on-band noise and flankers). The flankers were either absent (REF), modulated in a correlated manner with the on-band noise (CORR), or anticorrelated manner with the on-band noise (ACORR). The change in tone thresholds across conditions is quantified as the CMR effect. (B) Psychometric curves for tone detection in different CMR conditions was measured from N=203 subjects, yielding a clear separation between conditions. CMR for CORR-REF was about 4 dB, whereas CMR for CORR - ACORR was about 17 dB consistent with lab-based measurements with identical stimuli. Horizontal errorbars indicate 95% confidence intervals for the tone threshold in each condition.