Auditory Projections to the Anterior Telencephalon in the Budgerigar &lt;i&gt;(Melopsittacus undulatus)&lt;/i&gt;

Hall, William S.; Cohen, Paul L.; Brauth, Steven E.

doi:10.1159/000113827

Cited by 41 publications

(58 citation statements)

References 11 publications

(16 reference statements)

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“…The second band of Zenk+-labeled cells lies dorsal and ventral to the L2b nucleus. The most lateral band of Zenk+ neurons includes the NIVL (neostriatum intermedium pars ventrolateralis), a higher-order auditory region (Brauth and McHale 1988;Brauth et al 1994) that receives input from Field L and provides input to the HV medial to HVo (Hall et al 1993;Brauth et al 2001) (see Discussion).…”

Section: Zenk In Budgerigar Auditory Pathwaysmentioning

confidence: 99%

“…Pathway tracing experiments (Brauth et al , 1994Brauth and McHale 1988) have shown that the L1-L2a-L3 complex is associated with auditory input relayed from the primary auditory thalamic nucleus, nucleus ovoidalis, to L2a (Hall et al 1993;Brauth et al 2001). The fields located dorsal and ventral to L2a (i.e., L1 and L3), which extend into the overlying and underlying neostriatum are functionally related to this system in birds (Wild et al 1993).…”

Section: Zenk In Budgerigar Auditory Pathwaysmentioning

confidence: 99%

“…In birds, two ascending pathways called the thalamocortical and isthmofrontal pathways convey auditory information from the brainstem to the telencephalon (Arends and Zeigler 1986;Brauth et al 1987Brauth et al , 1994Hall et al 1993;Wild et al 1993Wild et al , 1996Striedter 1994;Wild and Farabaugh 1996). The thalamocortical pathway involves projections from the inferior colliculus (nucleus mesencephalic lateralis pars dorsalis) to the thalamic auditory relay, nucleus ovoidalis (Ov) (Karten 1967).…”

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confidence: 99%

“…This pathway involves direct projections from the intermediate nucleus of the lateral lemniscus to a nucleus in the anterior telencephalon called nucleus basalis (Bas) (Arends and Zeigler 1986;Hall et al 1993;Striedter 1994;Wild and Farabaugh 1996). In budgerigars, the thalamocortical and isthmofrontal pathways interact (Farabaugh and Wild 1997).…”

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confidence: 99%

“…NLc and HVo, in turn, project to other vocal control nuclei including those that project to the brainstem (Striedter 1994) as well as to a basal ganglia nucleus, the magnicellular nucleus of the lobus parolfactorius (LPOm) . HVvm receives input from the neostriatum intermedium pars ventrolateralis (NIVL), a higher-order auditory nucleus that receives input from Field L (Brauth and McHale 1988;Hall et al 1993).…”

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Contact Call-Driven Zenk Protein Induction and Habituation in Telencephalic Auditory Pathways in the Budgerigar (Melopsittacus Undulatus): Implications For Understanding Vocal Learning Processes

Brauth¹,

Liang²,

Roberts³

et al. 2002

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Expression of the immediate early gene protein Zenk (zif 268, egr-1, NGF1A, Krox24) was induced in forebrain auditory nuclei in a vocal learning parrot species, the budgerigar (Melopsittacus undulatus), when the subjects either listened to playbacks of an unfamiliar contact call or to a contact call with which they had been familiarized previously. Auditory nuclei included the Field L complex (L1, L2a, and L3), the neostriatum intermedium pars ventrolateralis (NIVL), the neostriatum adjacent to caudal nucleus basalis (peri-basalis or pBas), an area in the frontal lateral neostriatum (NFl), the supracentral nucleus of the lateral neostriatum (NLs), and the ventromedial hyperstriatum ventrale (HVvm). The latter three nuclei are main sources of auditory input to the vocal system. Two patterns of nuclear staining were induced by contact call stimulation-staining throughout cell nuclei, which was exhibited by at least some neurons in all areas examined except L2a and perinucleolar staining, which was the only kind of staining exhibited in field L2a. The different patterns of Zenk staining indicate that auditory stimulation may regulate the Zenk-dependent transcription of different subsets of genes in different auditory nuclei. The numbers of neurons expressing Zenk staining increased from seven-to 43-fold over control levels when the birds listened to a repeating unfamiliar call. Familiarization of the subjects with the call stimulus, through repeated playbacks, greatly reduced the induction of Zenk expression to the call when it was presented again after an intervening 24-h interval. To determine if neurons exhibiting contact call-driven Zenk expression project to the vocal control system, call stimulation was coupled with dextran amines pathway tracing. The results indicated that tracer injections in the vocal nucleus HVo (oval nucleus of the hyperstriatum ventrale), in fields lateral to HVo and in NLs labeled many Zenk-positive neurons in HVvm, NFl, and NLs. These results support the idea that, in these neurons, egr-1 couples auditory stimulation to the synthesis of proteins involved in either the storing of new perceptual engrams for vocal learning or the processing of novel and/or meaningful acoustic stimuli related to vocal learning or the context in which it occurs.It is generally believed that the long-term changes in synaptic strength necessary for the maintenance of memories require protein synthesis controlled by the expression of immediate early genes

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Section: Zenk In Budgerigar Auditory Pathwaysmentioning

confidence: 99%

Section: Zenk In Budgerigar Auditory Pathwaysmentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

mentioning

confidence: 99%

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Contact Call-Driven Zenk Protein Induction and Habituation in Telencephalic Auditory Pathways in the Budgerigar (Melopsittacus Undulatus): Implications For Understanding Vocal Learning Processes

Brauth¹,

Liang²,

Roberts³

et al. 2002

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Organization of afferent and efferent projections of the nucleus basalis prosencephali in a passerine,Taeniopygia guttata

Wild

Farabaugh

1996

J. Comp. Neurol.

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The connections of nucleus basalis (NB) of the rostral forebrain of the zebra finch were investigated electrophysiologically and with anterograde and retrograde tracing methods to determine their functional organization, the sources of their pontine afferents, and the targets of their telencephalic efferents. The nucleus was found to be partitioned into three major components, a rostral lingual part that received a hypoglossal projection via a lateral subnucleus of the principal sensory trigeminal nucleus (PrV), a middle beak part that received a trigeminal projection via a medial subnucleus of PrV, and a caudal auditory part that received a short latency auditory projection via the intermediate nucleus of the lateral lemniscus. Beak NB also received a projection from a paralateral lemniscal nucleus, and the dorsocaudal part of auditory NB and the medially adjacent neostriatum also received a projection from a lateral subnucleus of the superior vestibular nucleus (VS). The efferent projections of each of the three major parts of NB were mainly to the adjacent neostriatum frontale (NF), which then provided projections to the lobus parolfactorius (exclusive of area X), the lateral archistriatum intermedium (Ail), and the lateral neostriatum caudale (NCl). Ail received a projection from NCl and provided terminal fields to the contralateral NCl and the NF. The major projections of Ail, however, descended bilaterally through the brainstem via the occipitomesencephalic tracts, with dense terminations in the medial spiriform nucleus and with extensive bilateral terminations throughout the lateral reticular formation of the pons and medulla. For the most part, jaw, tongue, and tracheosyringeal motor nuclei did not receive terminations. The results suggest that NB in zebra finch, like NB in pigeon and duck, is likely to be a major component of trigeminal sensorimotor circuitry involved in feeding and in other oral-manipulative behaviors. Results also show that the auditory component of NB is not directly linked to the vocal control system at telencephalic levels, but the possibility remains that the lingual, beak, and auditory parts of NB play a role in vocalization by multisynaptic influences on cranial nerve motor nuclei innervating various parts of the vocal tract.

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Distribution of choline acetyltransferase and acetylcholinesterase in vocal control nuclei of the budgerigar (Melopsittacus undulatus)

et al. 1996

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The present study used histochemical methods to map the distributions of choline acetyl transferase (ChAT) and acetylcholinesterase (AChE) in the vocal control nuclei of a psittacine, the budgerigar (Melopsittacus undulatus). The distributions of ChAT and AChE in budgerigars appeared similar to that in oscine songbirds despite evidence that these systems have evolved independently. The magnicellular nucleus of the lobus parolfactorius in budgerigars, like the area X in songbirds, contained many ChAT labeled somata, fibers, and varicosities and stained densely for AChE. In contrast, the robust nucleus of the archistriatum (RA) and the supralaminar area of the frontal neostriatum in budgerigars, like the RA and the magnicellular nucleus of the neostriatum (MAN) in songbirds, respectively, contained few or no ChAT labeled somata, fibers, and varicosities and stained lightly for AChE. The central nucleus of the lateral neostriatum in budgerigars, like the higher vocal center (HVC) in songbirds, contained no ChAT labeled somata, moderate densities of ChAT labeled fibers and varicosities, and moderate levels of AChE staining. Two nuclei, the oval nucleus of the hyperstriatum ventrale (HVo) and the oval nucleus of the anterior neostriatum (NAo), contained no ChAT labeled somata, dense ChAT labeled fibers and varicosities, and moderate to high levels of AChE staining. The HVo and the NAo have no counterparts in songbirds but may be important vocal control nuclei in the budgerigar. Cholinergic enzymes are also described in other regions which may be involved in budgerigar vocal behavior, including the basal forebrain, the torus semicircularis, and the hypoglossal nuclei (nXII).

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Auditory Projections to the Anterior Telencephalon in the Budgerigar <i>(Melopsittacus undulatus)</i>

Cited by 41 publications

References 11 publications

Contact Call-Driven Zenk Protein Induction and Habituation in Telencephalic Auditory Pathways in the Budgerigar (Melopsittacus Undulatus): Implications For Understanding Vocal Learning Processes

Contact Call-Driven Zenk Protein Induction and Habituation in Telencephalic Auditory Pathways in the Budgerigar (Melopsittacus Undulatus): Implications For Understanding Vocal Learning Processes

Organization of afferent and efferent projections of the nucleus basalis prosencephali in a passerine,Taeniopygia guttata

Distribution of choline acetyltransferase and acetylcholinesterase in vocal control nuclei of the budgerigar (Melopsittacus undulatus)

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