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  • Title: A brain of her own: a neural correlate of song assessment in a female songbird.
    Author: Hamilton KS, King AP, Sengelaub DR, West MJ.
    Journal: Neurobiol Learn Mem; 1997 Nov; 68(3):325-32. PubMed ID: 9398592.
    Abstract:
    The song control region in the avian forebrain is a series of discrete, interconnected nuclei mediating song learning and production. It has been studied in males or in species where both sexes sing. Little is known about the neural correlates of song perception in nonsinging females, often the intended recipients of song. We studied cowbirds (Molothrus ater), a species in which only males sing but in which females discriminate between males on the basis of song. We focused on nucleus lMAN because it has been implicated in early song acquisition, a stage relevant to both sexes to choose among competing acoustic models. We found that volume of lMAN was monomorphic in cowbirds. Moreover, the volume and neuronal number of female lMAN were positively correlated with selectivity of copulatory responding. The results provide strong evidence of nonsinging female's use of "song" control nuclei for song perception without the possibility of song production.
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