Claims 23
From the paper Single-unit data for sensory neuroscience: Responses from the auditory nerve of young-adult and aging gerbils · claims file · checked 2026-10-22: ready
- table1-animals-units
The dataset holds 104 experiments (gerbils) with 1160 single auditory nerve fibres; 60 young-adult (32 female), 13 middle-aged (7 female) and 31 old (11 female) gerbils, with 759, 87 and 314 single units.
The dataset consists of 104 experiments, with a total of 1160 single auditory nerve fibres ... Number of animals (number of females) 60 (32) 13 (7) 31 (11) ... Total number of single units 759 87 314
Data Records, Files that help users search through the dataset, paragraph 2; Table 1How it will be judged
Counts of the records a data descriptor says it deposits, so the tolerance is zero, not the default 10%; any difference is reported with the units or animals it concerns. Animals are counted by animal ID (files of one experiment split in sequence numbers are one animal, as check_dataset_metadata.m merges them); age groups by age in days as the code defines them (young <= 365, middle > 365 and <= 1095, old > 1095). A unit counts towards its animal's group. Reproduced when all eleven counts match; partially reproduced when the totals match and a group count differs.
- table1-age-abr-weight
Mean ages of the groups are 5.5, 22.5 and 38.3 months, mean ABR thresholds 18.1, 34.2 and 49.0 dB SPL, and mean weights 74.6, 83.4 and 86.4 g (young adult, middle aged, old).
Age in months, mean +/- SD (range) 5.5 +/− 2.0 (2.7–11.4) 22.5 +/− 6.2 (12.6–33.2) 38.3 +/− 1.7 (36.0–41.7) ABR threshold in dB SPL, mean +/- SD (range) 18.1 +/− 5.3 (10.0–30.0) 34.2 +/− 10.2 (20.0–50.0) 49.0 +/− 18.0 (20.0–85.0) Weight in grams, mean +/- SD (range) 74.6 +/− 11.1 (51.2–100.0) 83.4 +/− 12.7 (66.8–103.0) 86.4 +/− 11.6 (60.0–120.0)
Table 1How it will be judged
As check_dataset_metadata.m computes them, over animals (one value per animal), ignoring missing values, with age in months as days / (365/12) and the code's age groups. The SDs and ranges of Table 1 are reported beside the means; the outcome rests on the means alone, as the statement does. Reproduced when all nine means are within tolerance; partially reproduced when at least six are.
- table1-bf-range
Best frequencies range from 428 to 15,825 Hz in young adults, 350 to 15,091 Hz in middle-aged and 620 to 15,762 Hz in old gerbils.
Range of best frequency in Hz 428–15,825 350–15,091 620–15,762
Table 1How it will be judged
As check_dataset_metadata.m computes it, a unit's BF is its stored BF.analysis.bf, or its CF.analysis.cf when it has no BF recording; the group's range is the minimum and maximum over its units. Each reported range is widened by 10% of each bound (young 385 to 17,408 Hz; middle 315 to 16,600 Hz; old 558 to 17,338 Hz). Reproduced when, for every group, the minimum lies within 10% of the reported lower bound and the maximum within 10% of the reported upper bound; partially reproduced when that holds for two of the three groups.
- fig3-abr-age
ABR thresholds rise with age, and hearing loss varies widely among the old animals.
a rough estimate of hearing sensitivity, as determined by the auditory brainstem response (ABR) to chirps (0.3–19 kHz), is plotted as a function of the animal’s age (Fig. 3 ). Note the large variability in age-related hearing loss among the old animals
Data Records, Files that help users search through the dataset, paragraph 2; Figure 3; Table 1How it will be judged
The paper reports no test; its support is Table 1. Over animals, with the code's age groups, reproduced when the mean ABR threshold increases from young to middle aged to old and the SD of old animals is the largest of the three (Table 1 gives 5.3, 10.2 and 18.0 dB). The range of old thresholds is reported (Table 1, 20 to 85 dB SPL).
- females-fewer-in-old
Old gerbils are skewed towards males (11 of 31 female), which the paper attributes to ovarian cancer and early death of old females.
Note the slightly skewed distribution of quiet-aged gerbils towards more males
Data Records, Files that help users search through the dataset, paragraph 2How it will be judged
Reproduced when fewer than half the old animals are female and the fraction is lower than in young adults (Table 1, 32 of 60). The cause (ovarian cancer) is not tested.
- oxygen-78
Of the 104 gerbils, 78 received additional oxygen throughout the experiment.
Of the total of 104 gerbils, 78 received additional oxygen (flow 1.5 l/min) in front of the tracheotomy or snout throughout the experiment
Methods, Surgical procedures, Anaesthesia, paragraph 2How it will be judged
A count of a metadata field (exp.info.anesthesia.oxygen, as read by check_dataset_metadata.m), so the tolerance is zero. Counted once per animal.
- complex-stimuli-experiments
Responses to paired noise bursts were recorded in 21 of 104 experiments, Schroeder-phase stimuli in 5, and consonant-vowel-consonant logatomes in 17.
in 21 of 104 experiments, responses to two 1-s noise bursts were recorded ... in 5 of 104 experiments, responses to Schroeder-phase harmonic tone complexes ... In 17 of 104 experiments, responses to consonant-vowel-consonant logatomes were recorded
Methods, Data acquisition, Complex acoustic stimuli, paragraph 1How it will be judged
As check_dataset_metadata.m counts them, an experiment counts when at least one of its units has a non-empty NOISE, SPS or CVC recording. Counts, tolerance zero.
- recording-type-counts
CF recordings were obtained for 119 fibres, CLICK for 261, SR for 203, NOISE for 143, SPS for 22 and CVC for 135.
For fibres for which a CF recording was obtained (n = 119) ... For fibres for which a CLICK recording was obtained (n = 261) ... For fibres for which a SR recording was obtained (n = 203) ... NOISE (n = 143, panel d ), SPS (n = 22, panel e ), and CVC (n = 135, panel f )
Figure 7 legendHow it will be judged
Counted as check_dataset_units.m prints them. CF, units with a non-NaN stored CF; CLICK, units with exactly one CLICK recording and a non-NaN 2-bin latency; SR, units with a non-NaN stored SR from an SR recording; NOISE, SPS and CVC, units with a non-empty recording of that type. Counts, tolerance zero. A second reading counts units with any recording of the type, whatever its analysed value; reproduced when every count matches under one reading, partially reproduced when four of six do.
- fig7-sampling-by-age
No SR, SPS or CVC recordings were obtained in middle-aged gerbils, and SPS responses were recorded only in young adults.
No SR, SPS, and CVC recordings were obtained in middle-aged gerbils, while SPS responses were only recorded in young-adult gerbils
Technical Validation, Sampling across best frequency for the different recording types, paragraph 1; Figure 7c to 7fHow it will be judged
With the code's age groups, reproduced when no middle-aged unit has an SR, SPS or CVC recording and no middle-aged or old unit has an SPS recording.
- isi-exclusion
Units with multiple inter-spike intervals below 0.6 ms, the absolute refractoriness of auditory nerve fibres, were excluded from the dataset.
Units with multiple inter-spike intervals <0.6 ms, which is the absolute refractoriness of auditory nerve fibres ... were excluded from the dataset
Technical Validation, Verification of single-unit recording and specificity to the auditory nerve bundle, paragraph 1; Figure 4bHow it will be judged
Inter-spike intervals are taken within trials, between successive spike times of a trial, as checkAN.m does. The paper does not say over which recordings a unit's ISIs are counted, nor fix "multiple"; the readings are (a) any single recording of the unit with two or more ISIs < 0.6 ms, (b) two or more ISIs < 0.6 ms pooled over all the unit's recordings, (c) as (a) for the BF recording only, the one shown in Fig. 4. checkAN.m counts the ISIs < 0.6 ms of one recording, which is closest to (a) and (c). These readings concern a method detail, so the outcome is the one they all give - reproduced when no unit fails under any of them, not reproduced when units fail under all of them, otherwise blocked as methods_underspecified. The number of failing units under each reading and the distribution of their counts of short ISIs are reported.
- no-prepotentials
No median spike waveform showed a prepotential, which would mark a ventral cochlear nucleus bushy cell.
We did not encounter any prepotentials in our recordings
Technical Validation, Verification of single-unit recording and specificity to the auditory nerve bundle, paragraph 2, first criterion; Figure 4dHow it will be judged
The paper's check was a visual inspection of the median waveform (checkAN.m); it and its code give no quantitative rule for a prepotential. The claim cannot be judged by a criterion fixed from the paper and is blocked as methods_underspecified unless a reader can supply one.
- rlf-monotonic
Rate-level functions were checked for atypical shapes (auditory nerve rate-level functions are typically straight, sloping saturating or flat saturating), and units whose rate-level function was nonmonotonic at levels below 80 dB SPL were excluded.
When a rate-level function showed nonmonotonicity at levels lower than 80 dB SPL, it indicated that the spikes derived from a non-primary cell receiving inhibitory input. The unit was then excluded from the dataset
Technical Validation, Verification of single-unit recording and specificity to the auditory nerve bundle, paragraph 2, second criterion; Figure 5aHow it will be judged
The check was visual ("carefully checked for atypical shapes"); the paper and its code give no rule for nonmonotonicity. The claim cannot be judged by a criterion fixed from the paper and is blocked as methods_underspecified unless a reader can supply one. As a description only, the number of units whose stored RLF mean rate falls between successive levels below 80 dB SPL by more than the stored standard deviation is reported.
- fig5b-example
The example fibre of Fig. 5b (animal G220908, unit 3p_181) had a best frequency of 7.6 kHz and a threshold of 19 dB SPL.
This fibre had a best frequency of 7.6 kHz and a threshold at 19 dB SPL
Figure 5b legendHow it will be judged
The stored BF.analysis.bf and RLF.analysis.threshold of the unit. The legend's other details (BF recording at 30 dB SPL with 5 repetitions, RLF recording at 40 dB SPL with 10 repetitions) are reported as found.
- fig6a-young-two-sensitive-regions
Fibres of young-adult gerbils show two regions of best sensitivity separated by a region around 3 to 4 kHz with higher thresholds and fewer fibres; the highest thresholds are at 3.5 kHz.
Fibres of young-adult gerbils exhibited two regions of best sensitivity (lowest thresholds), separated by a frequency region (around 3–4 kHz) with slightly less sensitive and fewer fibres ... For the young-adult gerbils in the current dataset, highest thresholds were at 3.5 kHz
Technical Validation, Consistency with data from other labs, paragraphs 1 and 2; Figure 6aHow it will be judged
As check_dataset_units.m builds the Fig. 6a moving average, young-adult units with a stored BF and RLF threshold, mean threshold in 24 logarithmic BF bins from 0.3 to 20 kHz (edges logspace(log10(0.3), log10(20), 25) kHz, a bin includes its upper edge), each plotted at its upper edge, so "at 3.5 kHz" is the bin from 2.92 to 3.48 kHz. The text does not say whether "highest" is over all bins or within the mid-frequency region; readings (a) the largest bin mean over all bins; (b) the largest bin mean between the two sensitive regions, that is a local maximum flanked on each side by bins with lower means. Reproduced when, under one reading, the highest bin mean is in the bin plotted at 3.48 kHz, with bins of lower mean threshold on both sides (two regions of best sensitivity). The code's bins are the resolution of the figure, so the neighbouring bins (plotted at 2.92 and 4.14 kHz) count as partially reproduced. All bin means and counts are reported.
- fig6b-young-bf-gap
Among young-adult fibres, the fewest best frequencies fall in the bin bordered by 2.5 and 3.0 kHz.
fewest fibres were in the bin bordered by 2.5 and 3.0 kHz (Fig. 6b )
Technical Validation, Consistency with data from other labs, paragraph 2; Figure 6bHow it will be judged
The histogram of check_dataset_units.m, stored BF.analysis.bf of young-adult units, 24 logarithmic bins with edges logspace(log10(200), log10(20000), 25) Hz; the bin the text names is the one from 2423 to 2936 Hz. The empty bins outside the recorded BF range cannot be meant, so readings (a) the bin has the fewest units of all bins between the lowest and the highest non-empty bin (ties allowed); (b) the bin is a local minimum, with fewer units than both its neighbours. Reproduced when (a) holds; partially reproduced when only (b) holds. All bin counts are reported.
- fig6c-sr-distributions
Among high-frequency fibres (BF above 3.5 kHz) there is a cluster with low spontaneous rates, and low-frequency fibres have a bimodal distribution of spontaneous rate with modes near 5 and 60 spikes/s.
Among the high-frequency fibres (>3.5 kHz), there was a cluster of fibres with low spontaneous rates ... The low-frequency fibres show a bimodal distribution of spontaneous rate, with a mode around 5 spikes/s and one around 60 spikes/s
Technical Validation, Consistency with data from other labs, paragraph 3; Figure 6cHow it will be judged
Young-adult units (Fig. 6c plots them only, in check_dataset_units.m), BF from the stored BF.analysis.bf, spontaneous rate as the code's best estimate (SR recording, else PH, else RLF, else BF), split at BF 3.5 kHz (<= 3500 Hz low, > 3500 Hz high), in the code's histogram of 5 spikes/s bins from 0 to 200 spikes/s. The tolerances are the bin width set by the code - the lower mode must be one of the bins 0 to 5 or 5 to 10, the upper one of the bins from 50 to 70 (60 plus or minus 10%, widened to the bin edges). The paper does not say how a mode is found; the reading is the two largest local maxima of that histogram (a bin with more units than both neighbours, or the first bin when it exceeds the second), separated by a bin with fewer units than both. For the high-BF cluster, the paper's low-SR cutoff is 18 spikes/s (Fig. 6d legend); the paper does not define a cluster, and the reading is that the histogram of high-BF units has its largest local maximum below 18 spikes/s. Reproduced when both parts hold; partially reproduced when one does.
- fig6d-max-phase-locking-bf
The highest best frequency at which significant phase locking was recorded in young-adult gerbils was 4.6 kHz.
The maximum best frequency at which significant phase locking was recorded in young-adult gerbils was 4.6 kHz
Technical Validation, Consistency with data from other labs, paragraph 4; Figure 6dHow it will be judged
Young-adult units with a PH recording and a stored BF.analysis.bf; a unit phase locks significantly when any level's PH.analysis.prob is not NaN and below 0.001 (Methods; check_dataset_units.m). The value is the largest BF among them.
- fig6d-highest-vs-low-bf-low-sr
The highest vector strengths are found among fibres with low best frequencies (below 1.5 kHz) and low spontaneous rates (below 18 spikes/s).
the highest vector strength values were found among the fibres with low best frequencies (<1.5 kHz) and low spontaneous rates (<18 spikes/s, shown in open markers Fig. 6d )
Technical Validation, Consistency with data from other labs, paragraph 4; Figure 6dHow it will be judged
Maximum vector strength per unit as check_dataset_units.m takes it (largest PH.analysis.vs over levels with prob not NaN and < 0.001), SR as the code's best estimate, BF from BF.analysis.bf. The paper does not say which age groups the sentence covers (it follows a sentence on young adults; Fig. 6d plots all three) or how "highest values" is judged. Readings, each for young adults alone and for all ages - (a) the unit with the largest maximum vector strength has BF < 1.5 kHz and SR < 18 spikes/s; (b) of the four groups the two cutoffs form, the median maximum vector strength is highest in the low-BF low-SR group. Reproduced when every reading holds; when they differ, blocked as methods_underspecified with all shown.
- fig7a-cf-matches-bf
Characteristic frequency from the CF recordings correlates strongly with best frequency from the BF recordings, with no systematic deviation towards higher or lower frequencies.
these figures confirm that the characteristic frequency derived from the CF recordings correlated strongly with the best frequency derived from the BF recordings, with no systematic deviation towards higher or lower frequencies (Fig. 7a )
Technical Validation, Sampling across best frequency for the different recording types, paragraph 1; Figure 7aHow it will be judged
Units with stored CF.analysis.cf and BF.analysis.bf, all ages, as Fig. 7a plots them on logarithmic axes against y = x. The paper reports no test, coefficient or threshold for "strongly". The correlation of log CF with log BF (Pearson, and Spearman as a variant) is reported with its p-value; the deviation is the median of log2(CF/BF) with a 95% bootstrap interval (10,000 resamples, a standard choice). Reproduced when the correlation is positive with p < 0.05 and the median CF/BF ratio lies within 10% of 1 (the default tolerance applied to the y = x line). "Strongly" is judged from the reported coefficient only.
- fig7b-click-latency-bf
Click latency is strongly negatively correlated with best frequency, reflecting the travelling wave delay along the cochlea.
Click latency had a strong negative correlation to best frequency, illustrating the travelling wave delay along the cochlea (Fig. 7b )
Technical Validation, Sampling across best frequency for the different recording types, paragraph 1; Figure 7bHow it will be judged
Units with exactly one CLICK recording, a non-NaN stored latency_2bins and a stored BF, all ages (check_dataset_units.m, type 3). The paper reports no test; Fig. 7b plots latency against log BF. The Pearson correlation of latency with log BF is reported, with the Spearman correlation as a variant. Reproduced when both are negative with p < 0.05.
- fig7ab-representative-sampling
The best-frequency distributions of the units with CF and with CLICK recordings are representative of the distribution of the full dataset.
BF distributions of two large datasets, CF and CLICK (Fig. 7a,b , respectively), are representative of the distribution of the full dataset (Fig. 6b )
Technical Validation, Sampling across best frequency for the different recording types, paragraph 1; Figure 7a and 7bHow it will be judged
The paper gives no test, and Fig. 6b, which it compares with, shows young adults only while Figs. 7a and 7b show all ages. Readings - the reference is (i) young-adult BFs, as in Fig. 6b, or (ii) all units' BFs; the comparison is (a) a two-sample Kolmogorov-Smirnov test of log BF, subset against the reference, finding no difference at p < 0.05, or (b) the subset's median BF within 10% of the reference's median. Reproduced when every reading holds for both CF and CLICK; not reproduced when none does; otherwise blocked as methods_underspecified with all shown.
- old-success-rate
Successful single-fibre recordings were obtained in 43% of old gerbils that were tried, against 88% of young adults.
successful recordings of single auditory-nerve fibres were obtained in only 43% of the experimental old gerbils (compared to 88% in young adults)
Background & Summary, paragraph 3How it will be judged
The denominators are animals that were operated on but gave no single units; the paper does not say they are in the dataset, which holds animals with recorded fibres. The claim needs those animals; whether the dataset lists them is the author's to find.
- psth-primary-like
Responses to tones at 20 and 30 dB above threshold were examined for non-primary-like shapes, using BF, RLF and PH recordings combined when available, and units with clearly non-primary-like responses were excluded.
The responses to tones at 20 and 30 dB above threshold were examined for non-primary-like shapes. When the response was clearly non-primary like, the unit was excluded from the dataset
Technical Validation, Verification of single-unit recording and specificity to the auditory nerve bundle, paragraph 2, third criterion; Figure 5bHow it will be judged
The check was visual; makePSTH.m builds the PSTH of BF, RLF and PH responses at or near a level above threshold (TestLevel), but the paper and its code give no rule for a non-primary-like shape. The claim cannot be judged by a criterion fixed from the paper and is blocked as methods_underspecified unless a reader can supply one.
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