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- W2015177764 abstract "Frequency tuning of auditory cortical neurons is typically determined by integrating spikes over the entire duration of a tone stimulus. However, this approach may mask functionally significant variations in tuning over the time course of the response. To explore this possibility, frequency response functions (FRFs) based on population multiunit activity evoked by pure tones of 175 or 200 ms duration were examined within four time windows relative to stimulus onset corresponding to on (10-30 ms), early sustained (30-100 ms), late sustained (100-175 ms), and off (185-235 or 210-260 ms) portions of responses in primary auditory cortex (A1) of 5 awake macaques. FRFs of on and early sustained responses displayed a good concordance, with best frequencies (BFs) differing, on average, by less than 0.25 octaves. In contrast, FRFs of on and late sustained responses differed considerably, with a mean difference in BF of 0.68 octaves. At many sites, tuning of off responses was inversely related to that of on responses, with off FRFs displaying a trough at the BF of on responses. Inversely correlated on and off FRFs were more common at sites with a higher on BF, thus suggesting functional differences between sites with low and high on BF. These results indicate that frequency tuning of population responses in A1 may vary considerably over the course of the response to a tone, thus revealing a temporal dimension to the representation of sound spectrum in A1." @default.
- W2015177764 created "2016-06-24" @default.
- W2015177764 creator A5067371259 @default.
- W2015177764 creator A5069998022 @default.
- W2015177764 date "2009-08-01" @default.
- W2015177764 modified "2023-09-23" @default.
- W2015177764 title "Temporally dynamic frequency tuning of population responses in monkey primary auditory cortex" @default.
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- W2015177764 doi "https://doi.org/10.1016/j.heares.2009.04.010" @default.
- W2015177764 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/2706923" @default.
- W2015177764 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/19389466" @default.
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