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pro vyhledávání: '"E J, Nordeen"'
Publikováno v:
Journal of neurobiology. 43(1)
In adulthood, songbird species vary considerably in the extent to which they rely on auditory feedback to maintain a stable song structure. The continued recruitment of new neurons into vocal motor circuitry may contribute to this lack of resiliency
Publikováno v:
Journal of neurobiology. 39(2)
In passerine songbirds, song learning often is restricted to an early sensitive period and requires the participation of several discrete regions within the anterior forebrain. Activation of N-methyl-D-aspartate (NMDA) receptors is implicated in song
Publikováno v:
Journal of neurobiology. 37(4)
The neural system controlling song in birds has proven a useful model for investigating how neuronal growth and survival are regulated by sexual differentiation. The present study focused on one song control area, the robust nucleus of the archistria
Autor:
K W, Nordeen, E J, Nordeen
Publikováno v:
Journal of neurobiology. 33(5)
In songbirds, vocal learning occurs during periods of major cellular and synaptic change. This neural reorganization includes massive synaptogenesis associated with the addition of new neurons into the vocal motor pathway, as well as pruning of conne
Publikováno v:
Journal of neurobiology. 33(1)
Only male zebra finches sing, and several brain regions implicated in song behavior exhibit marked sex differences in neuron number. In one region, the high vocal center (HVC), this dimorphism develops because the incorporation of new neurons is grea
Autor:
E J, Nordeen, K W, Nordeen
Publikováno v:
Journal of neurobiology. 30(4)
In zebra finches only males sing, and several song control nuclei contain more neurons in adult males than in females. In the robust nucleus of the archistriatum (RA), this sex difference in neuron number arises because neuron survival is greater in
Publikováno v:
Journal of Neurobiology. 18:569-582
In zebra finches the gonadal steroid estradiol (E2) directs the sexual differentiation of neural regions controlling song and synergizes with androgens to stimulate song in adulthood. To identify regions where E2 may act to exert these effects, stero
Autor:
Pauline Yahr, E. J. Nordeen
Publikováno v:
Science (New York, N.Y.). 218(4570)
Estrogen pellets were placed in either the right or left hypothalamus of newborn female rats so that only one side of this brain area was exposed to the postnatal masculinizing and defeminizing effects of the hormone. The effects of estrogen on gonad
Autor:
Pauline Yahr, E. J. Nordeen
Publikováno v:
Hormones and behavior. 15(2)
Androgens classified as nonaromatizable in placental assay systems typically do not mimic testosterone's effects on sexual behavior in rats. 6α-Fluorotestosterone is an exception. To pursue this challenge to the aromatization hypothesis, we compared
Publikováno v:
Science (New York, N.Y.). 229(4714)
The spinal nucleus of the bulbocavernosus (SNB) contains many more motoneurons in adult male rats than in females. Androgens establish this sex difference during a critical perinatal period, which coincides with normally occurring cell death in the S