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Subcortical Neural Synchrony and Absolute Thresholds Predict Frequency Discrimination Independently

Overview of attention for article published in Journal of the Association for Research in Otolaryngology, June 2013
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Title
Subcortical Neural Synchrony and Absolute Thresholds Predict Frequency Discrimination Independently
Published in
Journal of the Association for Research in Otolaryngology, June 2013
DOI 10.1007/s10162-013-0402-3
Pubmed ID
Authors

F. Marmel, D. Linley, R. P. Carlyon, H. E. Gockel, K. Hopkins, C. J. Plack

Abstract

The neural mechanisms of pitch coding have been debated for more than a century. The two main mechanisms are coding based on the profiles of neural firing rates across auditory nerve fibers with different characteristic frequencies (place-rate coding), and coding based on the phase-locked temporal pattern of neural firing (temporal coding). Phase locking precision can be partly assessed by recording the frequency-following response (FFR), a scalp-recorded electrophysiological response that reflects synchronous activity in subcortical neurons. Although features of the FFR have been widely used as indices of pitch coding acuity, only a handful of studies have directly investigated the relation between the FFR and behavioral pitch judgments. Furthermore, the contribution of degraded neural synchrony (as indexed by the FFR) to the pitch perception impairments of older listeners and those with hearing loss is not well known. Here, the relation between the FFR and pure-tone frequency discrimination was investigated in listeners with a wide range of ages and absolute thresholds, to assess the respective contributions of subcortical neural synchrony and other age-related and hearing loss-related mechanisms to frequency discrimination performance. FFR measures of neural synchrony and absolute thresholds independently contributed to frequency discrimination performance. Age alone, i.e., once the effect of subcortical neural synchrony measures or absolute thresholds had been partialed out, did not contribute to frequency discrimination. Overall, the results suggest that frequency discrimination of pure tones may depend both on phase locking precision and on separate mechanisms affected in hearing loss.

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Geographical breakdown

Country Count As %
Ghana 1 1%
United Kingdom 1 1%
New Zealand 1 1%
Belgium 1 1%
United States 1 1%
Unknown 94 95%

Demographic breakdown

Readers by professional status Count As %
Student > Ph. D. Student 25 25%
Researcher 20 20%
Other 9 9%
Student > Master 9 9%
Student > Doctoral Student 7 7%
Other 21 21%
Unknown 8 8%
Readers by discipline Count As %
Psychology 22 22%
Neuroscience 19 19%
Medicine and Dentistry 13 13%
Engineering 10 10%
Agricultural and Biological Sciences 7 7%
Other 12 12%
Unknown 16 16%
Attention Score in Context

Attention Score in Context

This research output has an Altmetric Attention Score of 1. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 01 October 2014.
All research outputs
#19,244,099
of 23,849,058 outputs
Outputs from Journal of the Association for Research in Otolaryngology
#334
of 429 outputs
Outputs of similar age
#150,354
of 199,069 outputs
Outputs of similar age from Journal of the Association for Research in Otolaryngology
#4
of 9 outputs
Altmetric has tracked 23,849,058 research outputs across all sources so far. This one is in the 11th percentile – i.e., 11% of other outputs scored the same or lower than it.
So far Altmetric has tracked 429 research outputs from this source. They receive a mean Attention Score of 4.8. This one is in the 11th percentile – i.e., 11% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 199,069 tracked outputs that were published within six weeks on either side of this one in any source. This one is in the 12th percentile – i.e., 12% of its contemporaries scored the same or lower than it.
We're also able to compare this research output to 9 others from the same source and published within six weeks on either side of this one. This one has scored higher than 5 of them.