2016
DOI: 10.1016/j.neuron.2016.06.019
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A Distributed Recurrent Network Contributes to Temporally Precise Vocalizations

Abstract: SUMMARY How do forebrain and brainstem circuits interact to produce temporally precise and reproducible behaviors? Birdsong is an elaborate, temporally precise and stereotyped vocal behavior controlled by a network of forebrain and brainstem nuclei. An influential idea is that song premotor neurons in a forebrain nucleus (HVC) form a synaptic chain that dictates song timing in a top-down manner. Here we combine physiological, dynamical and computational methods to show that song timing is not generated solely … Show more

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Cited by 85 publications
(111 citation statements)
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References 61 publications
(104 reference statements)
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“…Moreover, the fact that the activity in IA results practically constant across all temperatures leads us to picture the system as a jazz band where the rhythms emerge from the interaction of many musicians instead of an orchestra with its director. This is in agreement with recent physiological experiments measuring the processing time between HVC and Uva while thermally manipulating each nucleus [22], and experimental modeling of the synaptic delays in HVC neurons [24], which supports the hypothesis of a distributed timescale among the brain song network.…”
Section: Discussionsupporting
confidence: 91%
See 3 more Smart Citations
“…Moreover, the fact that the activity in IA results practically constant across all temperatures leads us to picture the system as a jazz band where the rhythms emerge from the interaction of many musicians instead of an orchestra with its director. This is in agreement with recent physiological experiments measuring the processing time between HVC and Uva while thermally manipulating each nucleus [22], and experimental modeling of the synaptic delays in HVC neurons [24], which supports the hypothesis of a distributed timescale among the brain song network.…”
Section: Discussionsupporting
confidence: 91%
“…This procedure was then repeated by changing the delay ∆ in the range of 20 to 36 ms, with a step of 2 ms. This is a reasonable delay range to explore for a minimum of three synapse distance connection [22,28,33]. Figure 3(B) -lower panel-shows the minimum value of X (normalized in the [0, 1] range) for each delay.…”
Section: F P0 Syllablesmentioning
confidence: 99%
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“…Rodents have been instrumental in developing our current understanding of motor cortex function and plasticity; however, it is of great interest to determine the mechanisms underlying motor abilities that rodents do not possess, such as the superior dexterity of primates (Shmuelof & Krakauer 2011). Alternately, songbirds represent a remarkable example of well-studied nonmammalian skilled motor learning, although it is not known whether principles such as basal ganglia regulation of variability (Woolley et al 2014), robust patterned activity driven by recurrent connectivity (Hamaguchi et al 2016, Long et al 2010), or modification of previously learned movement-related activity to generate new movements (Okubo et al 2015) exist in mammals. Recent work demonstrating a shifting relationship between activity in a motor region and song production in birds has provided an especially intriguing opportunity for drawing complements to the mammalian motor cortex (Liberti et al 2016).…”
Section: Future Directionsmentioning
confidence: 99%