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  • Title: Azimuthal processing in the posterior auditory thalamus of cats.
    Author: Aitkin L, Jones R.
    Journal: Neurosci Lett; 1992 Aug 03; 142(1):81-4. PubMed ID: 1407724.
    Abstract:
    The responses to free-field acoustic stimuli of 157 units in the auditory thalamus of anesthetized cats were studied in relation to the localization of pure tone stimuli in the azimuthal plane. Units were classified as 'directional' if their firing rates at sound levels in excess of 20 dB above threshold varied by more than 50% as a function of azimuth. Sixty-five % of the units in the nucleus of the brachium of the inferior colliculus and 30% in the ventral division of the medial geniculate body were found to be directional, suggesting different processing channels for sound localization between colliculus and cortex.
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