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  • Title: Afferent cortical connections of the motor cortical larynx area in the rhesus monkey.
    Author: Simonyan K, Jürgens U.
    Journal: Neuroscience; 2005; 130(1):133-49. PubMed ID: 15561431.
    Abstract:
    The present study describes the cortical input into the motor cortical larynx area. The retrograde tracer horseradish peroxidase-conjugated wheat germ agglutinin was injected into the electrophysiologically identified motor cortical larynx area in three rhesus monkeys (Macaca mulatta). Retrogradely labeled cells were found in the surrounding premotor cortex (areas 6V and 6D), primary motor cortex (area 4), primary somatosensory cortex (areas 3, 1 and 2), anterior and posterior secondary somatosensory cortex and the probable homologue of Broca's area (areas 44 and 45); furthermore, labeling was found in the supplementary motor area, anterior and posterior cingulate cortex (areas 24 and 23), prefrontal and orbital frontal cortex (areas 8A, 46V, 47/12L, 47/12O, 13), agranular, dysgranular and granular insula as well as in the cortex within the upper bank of the middle third of the superior temporal sulcus (area TPO). The majority of these regions are reciprocally connected with the motor cortical larynx area [Brain Res 949 (2000) 23]. The laryngeal motor cortical input is discussed in relation to the connections of other motor cortical areas and its role in vocal control.
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