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  • Title: Auditory responses in the nucleus basalis of the pigeon.
    Author: Maekawa M.
    Journal: Hear Res; 1987; 27(3):231-7. PubMed ID: 3610851.
    Abstract:
    Single-unit responses and field potentials evoked by sound stimuli were recorded from the nucleus basalis in the frontal lobe of the pigeon brain. Auditory units in this nucleus showed phasic responses to tonal stimuli and sharp frequency tuning. The latency of responses was 5.8 +/- 0.6 ms. The response properties of these units were similar to those of units in the nucleus mesencephalicus lateralis, pars dorsalis (a mesencephalic auditory nucleus), where fibers from the auditory nuclei in the medulla terminate. This suggests that the nucleus basalis receives projections from medullary auditory neurons. Averaged auditory field potentials in the frontal lobe had three prominent components. Regional changes in the polarity of each component suggest that auditory neurons in the medulla project directly to the nucleus basalis, which in turn projects to the frontal neostriatum.
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