Estimating Audiometric Thresholds Using Auditory Steady-State Responses
Bibliographic record
Abstract
Human auditory steady-state responses (ASSRs) were recorded using stimulus rates of 78–95 Hz in normal young subjects, in elderly subjects with relatively normal hearing, and in elderly subjects with sensorineural hearing impairment. Amplitude-intensity functions calculated relative to actual sensory thresholds (sensation level or SL) showed that amplitudes increased as stimulus intensity increased. In the hearing-impaired subjects this increase was more rapid at intensities just above threshold ("electrophysiological recruitment") than at higher intensities where the increase was similar to that seen in normal subjects. The thresholds in dB SL for recognizing an ASSR and the intersubject variability of these thresholds decreased with increasing recording time and were lower in the hearing impaired compared to the normal subjects. After 9.8 minutes of recording, the average ASSR thresholds (and standard deviations) were 12.6 ± 8.7 in the normal subjects, 12.4 ± 11.9 dB in the normal elderly, and 3.6 ± 13.5 dB SL in the hearing-impaired subjects. Se registraron respuestas auditivas de estado estable (ASSR) en humanos, usando una tasa de estímulos de 78-95 Hz en sujetos jóvenes con audicón normal, en sujetos ancianos con una audición relativamente normal, y en sujetos ancianos con un trastorno auditivo sensorineural. Las funciones de amplitud-intensidad calculadas en relación con los umbrales auditivos reales (nivel de sensación o SL) mostraron que las amplitudes aumentan conforme se incrementa la intensidad. En los sujetos hipoacúsicos este incremento fue más rápido en intensidades justo por encima del umbral ("reclutamiento electrofisiológico") que a intensidades mayores, donde el incremento era similar al visto en los sujetos normales. Los umbrales en dB SL para reconocer una ASSR, y la variabilidad inter-sujetos de estos umbrales, disminuyó conforme aumentó el tiempo de registro y fue menor en los sujetos hipoacúsicos, comparada con los normales. Luego de 9.8 minutos de registro, los umbrales promedio de las ASSR (y sus desviaciones estándar) fue de 12.6 ± 8.7 en los sujetos normales, 12.4 ± 11.9 dB en los ancianos normales y 3.6 ± 13.5 dB SL en los sujetos hipoacúsicos.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.004 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".