Data for preliminary evaluation of the FastCAP for users of the Nurotron cochlear implant
Description
Hypothesis: The FastCAP paradigm will produce results highly correlated with traditional ECAP measurements while reducing the time required for data collection. Additionally, FastCAP thresholds will be significantly correlated with behavioral thresholds and comfortable loudness levels in CI users. Data Description: The data consist of ECAP and FastCAP measurements across five electrodes at four different stimulation levels per electrode. These data were collected from 40 CI users. Measurements include: 1.ECAP N1 amplitude and FastCAP N1 amplitude at four stimulation levels. 2.ECAP N1 latency and FastCAP N1 latency at four stimulation levels. 3.FastCAP Test 1 N1 amplitude and FastCAP Test 2 N1 amplitude at the same four stimulation levels. 4.FastCAP Test 1 N1 latency and FastCAP Test 2 N1 latency at the four stimulation levels. 5.FastCAP thresholds, T-levels (behavioral thresholds), and C-levels (comfortable loudness levels) for individual participants across each test electrode. This structured dataset allows for direct comparison between the traditional ECAP and the new FastCAP paradigm at various stimulation levels. The inclusion of test-retest data for FastCAP (Test 1 and Test 2) helps evaluate the reliability of the new method, while threshold data (FastCAP thresholds, T-levels, and C-levels) provides insights into the potential clinical utility of FastCAP for cochlear implant users. Data Gathering: ECAP measurements: Collected using the traditional method with a slower stimulation rate of 2.5 Hz. FastCAP measurements: Collected using the new method with a stimulation rate of 33.3 Hz, where multiple recordings were averaged directly on the CI hardware before transmission. Data were gathered across multiple sessions to assess test-retest reliability. Notable Findings: Strong correlations were found between ECAP and FastCAP measurements for both N1 latency (r = 0.84) and N1 amplitude (r = 0.97). FastCAP demonstrated high test-retest reliability, with intraclass correlation coefficients of 0.87 for N1 latency and 0.96 for N1 amplitude. FastCAP thresholds were significantly correlated with behavioral thresholds in 7/20 participants and with comfortable loudness levels in 11/20 participants. The time required to collect FastCAP data was significantly reduced compared to ECAP measurements. Interpretation: The data suggest that FastCAP can serve as a reliable and efficient alternative to traditional ECAP measurements in CI users. Its faster data collection process without compromising accuracy makes it a promising tool for clinical settings, particularly for optimizing CI processor settings such as stimulation threshold levels. Implications: FastCAP has the potential to streamline clinical workflows for cochlear implant users, allowing quicker and more efficient processor adjustments while maintaining measurement accuracy. This could lead to better personalized auditory outcomes for CI users.