High Vocal Center (Latest Articles)

Latest indexed articles for 'High Vocal Center'

Articles 21 to 30 of 40:

Increasing stereotypy in adult zebra finch song correlates with a declining rate of adult neurogenesis.

30 Oct 2007 Adult neurogenesis is often correlated with learning new tasks, suggesting that a function of incorporating new neurons is to permit new memory formation. However, in the zebra finch, neurons are added to the song motor pathway throughout life, long ...
rec_pub_17595004-increasing-stereotypy-adult-zebra-finch-song-correlates-declining.htm

Hemispheric coordination is necessary for song production in adult birds: implications for a dual role for forebrain nuclei in vocal motor control.

29 Oct 2007 Precise coordination across hemispheres is a critical feature of many complex motor circuits. In the avian song system the robust nucleus of the arcopallium (RA) plays a key role in such coordination. It is simultaneously the major output structure ...
rec_pub_17977927-hemispheric-coordination-necessary-song-production-adult-birds.htm

LMAN lesions prevent song degradation after deafening without reducing HVC neuron addition.

13 Sep 2007 In some songbirds perturbing auditory feedback can promote changes in song structure well beyond the end of song learning. One factor that may drive vocal change in such deafened birds is the ongoing addition of new vocal-motor neurons into the song ...
rec_pub_17694506-lman-lesions-prevent-song-degradation-deafening-reducing-hvc-neuron.htm

Song and brain development in canaries raised under different conditions of acoustic and social isolation over two years.

13 Sep 2007 Early isolation experiments indicate that male songbirds learn their songs during an early sensitive period, although later work has shown that some open-ended learners modify songs in later years. Recent isolation experiments suggest that in some ...
rec_pub_17525993-song-brain-development-canaries-raised-different-conditions-acoustic.htm

FnTm2, a novel brain-specific transcript, is dynamically expressed in the song learning circuit of the zebra finch.

8 Sep 2007 Zebra finch males learn their song by imitation, a process influenced by social variables. The neural pathways for acquisition and production of learned song are known, but the cellular and molecular underpinnings are not. Here we describe a novel ...
rec_pub_17626267-fntm2-novel-brain-specific-transcript-dynamically-expressed-song.htm

Auditory stimulation of reproductive function in male Rufous-winged Sparrows, Aimophila carpalis.

22 Aug 2007 Prolonged exposure to conspecific song stimulates gonadal function and reproductive hormone secretion in female birds but few studies have investigated the physiological effects of conspecific song exposure on males outside of short-term, aggressive ...
rec_pub_17920598-auditory-stimulation-reproductive-function-male-rufous-winged.htm

Song repertoire size varies with HVC volume and is indicative of male quality in song sparrows (Melospiza melodia).

20 Aug 2007 Complex birdsong is a classic example of a sexually selected ornamental trait. In many species, females prefer males with large song repertoires, possibly because repertoire size is limited by the size of song control nuclei which reflect ...
rec_pub_17567560-song-repertoire-size-varies-hvc-volume-indicative-male-quality-song.htm

Plasticity of the Rufous-winged Sparrow, Aimophila carpalis, song control regions during the monsoon-associated summer breeding period.

27 Jun 2007 In most temperate zone songbirds, exposure to increasing photoperiod in the spring stimulates the reproductive system and induces reproductive behaviors. Additionally, the brain regions that control singing (song control regions; SCRs) are larger ...
rec_pub_17673216-plasticity-rufous-winged-sparrow-aimophila-carpalis-song-control.htm

Role of the midbrain dopaminergic system in modulation of vocal brain activation by social context.

30 May 2007 In a well-studied model of social behaviour, male zebra finches sing directed song to court females and undirected song, used possibly for practice or advertisement. Although the two song types are similar, the level of neural activity and ...
rec_pub_17553009-role-midbrain-dopaminergic-system-modulation-vocal-brain-activation.htm

Noradrenergic projections to the song control nucleus area X of the medial striatum in male zebra finches (Taeniopygia guttata).

30 May 2007 There is considerable functional evidence implicating norepinephrine in modulating activity in the vocal control circuit of songbirds. However, our knowledge of noradrenergic inputs to the song system is incomplete. In this study, cholera toxin ...
rec_pub_17394158-noradrenergic-projections-song-control-nucleus-area-x-medial-striatum.htm

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