Show Reference: "The Ferret Auditory Cortex: Descending Projections to the Inferior Colliculus"

The Ferret Auditory Cortex: Descending Projections to the Inferior Colliculus Cerebral Cortex, Vol. 17, No. 2. (February 2007), pp. 475-491 by Victoria M. Bajo, Fernando R. Nodal, Jennifer K. Bizley, David R. Moore, Andrew J. King
    abstract = {Descending corticofugal projections are thought to play a critical role in shaping the responses of subcortical neurons. Here, we examine the origins and targets of ferret auditory corticocollicular projections. We show that the ectosylvian gyrus ({EG}), where the auditory cortex is located, can be subdivided into middle, anterior, and posterior regions according to the pattern of cytochrome oxidase staining and immunoreactivity for the neurofilament antibody {SMI32}. Injection of retrograde tracers in the inferior colliculus ({IC}) labeled large layer V pyramidal cells throughout the {EG} and adjacent sulci. Each region of the {EG} has a different pattern of descending projections. Neurons in the primary auditory fields in the middle {EG} project to the lateral nucleus ({LN}) of the ipsilateral {IC} and bilaterally to the dorsal cortex and dorsal part of the central nucleus ({CN}). The projection to these dorsomedial regions of the {IC} is predominantly ipsilateral and topographically organized. The secondary cortical fields in the posterior {EG} target the same midbrain areas but exclude the {CN} of the {IC}. A smaller projection to the ipsilateral {LN} also arises from the anterior {EG}, which is the only region of auditory cortex to target tegmental areas surrounding the {IC}, including the superior colliculus, periaqueductal gray, intercollicular tegmentum, and cuneiform nucleus. This pattern of corticocollicular connectivity is consistent with regional differences in physiological properties and provides another basis for subdividing ferret auditory cortex into functionally distinct areas.},
    author = {Bajo, Victoria M. and Nodal, Fernando R. and Bizley, Jennifer K. and Moore, David R. and King, Andrew J.},
    citeulike-article-id = {13492026},
    citeulike-linkout-0 = {},
    citeulike-linkout-1 = {},
    issn = {1047-3211},
    journal = {Cerebral Cortex},
    keywords = {auditory, auditory-cortex, biology, cortex, ic, sc, sc-connectivity, sc-input},
    month = feb,
    number = {2},
    pages = {475--491},
    pmid = {16581982},
    posted-at = {2015-01-14 16:08:59},
    priority = {2},
    title = {The Ferret Auditory Cortex: Descending Projections to the Inferior Colliculus},
    url = {},
    volume = {17},
    year = {2007}

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There are projections from auditory cortex to SC (from anterior ectosylvian gyrus).