This readme.txt file was generated on 20191210 by Heather Kreft in collaboration with DRUM. ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset: Data from Auditory enhancement under forward masking in normal-hearing and hearing-impaired listeners 2. Author Information Principal Investigator Contact Information Name: Heather A. Kreft Institution: University of Minnesota Address: 75 E River Rd, Minneapolis, MN 55455 Email: plumx002@umn.edu ORCID: 0000-0003-0764-0820 Associate or Co-investigator Contact Information Name: Andrew J. Oxenham Institution: University of Minnesota Address: 75 E River Rd, Minneapolis, MN 55455 Email: oxenham@umn.edu ORCID: 0000-0002-9365-1157 3. Date of data collection: 2018-01-04 to 2018-10-03 4. Geographic location of data collection (where was data collected?): Minneapolis, MN 5. Information about funding sources that supported the collection of the data: NIH NIDCD Grant R01 DC 012262 -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: CC0 1.0 Universal (http://creativecommons.org/publicdomain/zero/1.0/) 2. Links to publications that cite or use the data: Kreft, H. A., & Oxenham, A. J. (2019). Auditory enhancement under forward masking in normal-hearing and hearing-impaired listeners. The Journal of the Acoustical Society of America, 146(5), 3448-3456. https://doi.org/10.1121/1.5133629 3. Links to other publicly accessible locations of the data: NA 4. Links/relationships to ancillary data sets: NA 5. Was data derived from another source? No 6. Recommended citation for the data: Kreft, Heather A; Oxenham, Andrew J. (2019). Data from Auditory enhancement under forward masking in normal-hearing and hearing-impaired listeners. Retrieved from the Data Repository for the University of Minnesota, https://doi.org/10.13020/0dpe-ec23. --------------------- DATA & FILE OVERVIEW --------------------- 1. File List A. Filename: DRUM_HIENH.xls Short description: Excel spreadsheet with 40 worksheets containing summary data for each participant B. Filename: Readme.txt Short description: Description of the data 2. Relationship between files: NA 3. Additional related data collected that was not included in the current data package: 4. Are there multiple versions of the dataset? No If yes, list versions: Name of file that was updated: i. Why was the file updated? ii. When was the file updated? Name of file that was updated: i. Why was the file updated? ii. When was the file updated? -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: See Kreft, H. A., & Oxenham, A. J. (2019). Auditory enhancement under forward masking in normal-hearing and hearing-impaired listeners. The Journal of the Acoustical Society of America, 146(5), 3448-3456. https://doi.org/10.1121/1.5133629 2. Environmental/experimental conditions: Ten hearing-impaired (HI) listeners were tested (five females, five males with sensorineural hearing loss of unknown origin; age range 63 to 78 years; average age = 72 years), along with ten age-matched normal hearing (NH) listeners (nine females, one male; age range 61 to 78; average age = 69 years). The target and probe frequency was either 2 or 4 kHz. The masker consisted of four equal-amplitude, logarithmically spaced sinusoids that were geometrically centered around the target frequency to produce a spectral notch of either 0.6 or 1.2 octaves. The frequency spacing between the masker components on either side of the target was 0.1 octaves. In the main enhancement condition (ENH), the precursor consisted of the same four logarithmically spaced tones as the masker. In the condition with only the masker (MSK), no precursor was presented. The third condition was a control (CON), in which the precursor was present but contained both the masker and target components (five components total). The fourth and fifth conditions (MSK0 and ENH0) were the same as MSK and ENH, but with the target component removed from the masker. In all cases, the level per component of the precursor was the same as that of the masker and target, and the level of the probe was adaptively varied to determine its forward-masked threshold. The stimuli were presented in quiet or in the presence of threshold-equalizing noise (TEN), which produces masked thresholds for sinusoidal targets that are approximately independent of the target frequency (Moore et al., 2000). The purpose of the noise was to elevate the target thresholds for the NH listeners to those obtained for the individual HI listeners, so as to allow for comparisons at both equal SPL and (masked) SL. The TEN was bandpass filtered between 20 and 8000 Hz. All NH listeners completed all five stimulus conditions under the following three level configurations: (1) the same SPL as the HI listeners (NH85), (2) the same SL as the HI listeners (NHSL), and (3) the same SPL as the HI listeners, but embedded in TEN noise to approximate the same SL (noise-masked normal hearing; NMNH). 6. Describe any quality-assurance procedures performed on the data: 7. People involved with sample collection, processing, analysis and/or submission: ----------------------------------------------- DATA-SPECIFIC INFORMATION FOR: DRUM_HIENH.xlsx ----------------------------------------------- There are 40 total data sheets within the Excel workbook. Each worksheet is for an individual's data/condition. HI = hearing-impaired NH85 = normal hearing at 85 dB SPL NMNH = normal hearing at 85 dB SPL in presence of TEN NHSL = normal hearing at equal sensation level of matched HI Each worksheet has the same layout: Column B is probe thresholds Column C is masker thresholds Column D is MSK condition thresholds for 0.6 octave notch width Column E is ENH condition thresholds for 0.6 octave notch width Column F is CON condition thresholds for 0.6 octave notch width Column G is MSK0 condition thresholds for 0.6 octave notch width Column H is ENH0 condition thresholds for 0.6 octave notch width Column I is MSK condition thresholds for 1.2 octave notch width Column J is ENH condition thresholds for 1.2 octave notch width Column K is CON condition thresholds for 1.2 octave notch width Column L is MSK0 condition thresholds for 1.2 octave notch width Column M is ENH0 condition thresholds for 1.2 octave notch width Rows 8 through 13 are data for signal frequency = 2000 Hz with averages and standard deviations calculated in rows 6 and 7, respectively Rows 18 through 23 are data for signal frequency = 4000 Hz with averages and standard deviations calculated in rows 16 and 17, respectively