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Neural correlates of gap detection in three auditory cortical fields in the Cat.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Eggermont, Jos J. |
| Copyright Year | 1999 |
| Abstract | Neural correlates of gap detection in three auditory cortical fields in the cat. Mimimum detectable gaps in noise in humans are independent of the position of the gap, whereas in cat primary auditory cortex (AI) they are position dependent. The position dependence in other cortical areas is not known and may resolve this contrast. This study presents minimum detectable gap-in-noise values for which single-unit (SU), multiunit (MU) recordings and local field potentials (LFPs) show an onset response to the noise after the gap. The gap, which varied in duration between 5 and 70 ms, was preceded by a noise burst of either 5 ms (early gap) or 500 ms (late gap) duration. In 10 cats, simultaneous recordings were made with one electrode each in AI, anterior auditory field (AAF), and secondary auditory cortex (AII). In nine additional cats, two electrodes were inserted in AI and one in AAF. Minimum detectable gaps based on SU, MU, or LFP data in each cortical area were the same. In addition, very similar minimum early-gap values were found in all three areas (means, 36.1-41.7 ms). The minimum late-gap values were also similar in AI and AII (means, 11.1 and 11.7 ms), whereas AAF showed significantly larger minimum late-gap durations (mean 21.5 ms). For intensities >35 dB SPL, distributions of minimum early-gap durations in AAF and AII had modal values at approximately 45 ms. In AI, the distribution was more uniform. Distributions for minimum late-gap duration were skewed toward low values (mode at 5 ms), but high values ( |
| Starting Page | 261 |
| Ending Page | 269 |
| Page Count | 9 |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://jn.physiology.org/content/jn/81/5/2570.full.pdf |
| PubMed reference number | 10322090v1 |
| Volume Number | 81 |
| Issue Number | 5 |
| Journal | Journal of neurophysiology |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Acetylaminofluorene Aortic Valve Insufficiency Auditory Perceptual Disorders Auditory area Cerebral cortex Convergence (action) Data Collection Large NLRP3 wt Allele Natural Science Disciplines Neurons Psychoacoustics Reprint SGPL1 gene Sensorineural Hearing Loss (disorder) Tomography, Emission-Computed, Single-Photon electrode |
| Content Type | Text |
| Resource Type | Article |
