Convergence in Vocal Premotor Coding

发声前运动编码的收敛

• 批准号: 7157942
• 负责人: TODD F ROBERTS
• 金额: $ 5.04万
• 依托单位: DUKE UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-06-01 至 2008-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7157942
• 关键词: Aves; learning; neurons; songbirds; vocalization

DESCRIPTION (provided by applicant): It is not known if optimal coding strategies exist for learned motor behavior. Vocal learning is an excellent behavior in which this issue can be examined because all vocal learning species share similar constraints. This research will ask if parrots encode vocal representations in a manner similar to the vocal coding strategy previously described in songbirds. Birdsong is coded by a sparse-to-detailed temporal code between two premotor forebrain nuclei. This application asks if this coding strategy obtains in an analogous premotor circuit in the parrot forebrain. We will examine this issue using single cell chronic recordings during the production of learned vocalizations in an Australian parrot, the budgerigar. These studies will allow us to accurately assess the relation between motor output and premotor neural activity. If similar coding strategies are not evident among songbirds and parrots, it suggests that premotor representations for learned vocalizations are not highly constrained even among birds. Alternatively, if coding strategies are retained it will spur further investigation into other vocal learning species in order to establish a comparative data set for future cladistic analysis for coding strategies for learned vocalizations more generally.

描述（由申请人提供）：尚不清楚学习的运动行为是否存在最佳编码策略。声带学习是一种出色的行为，可以研究这个问题，因为所有声音学习物种都具有相似的限制。这项研究将询问鹦鹉是否以类似于鸣禽先前描述的人声编码策略的方式编码声音表示。 Birdsong由两个前前脑前核之间的稀疏到详细的时间代码编码。该应用程序询问该编码策略是否在鹦鹉前脑中的类似前运动电路中获得。我们将在澳大利亚鹦鹉Budgerigar生产学习的发声过程中使用单细胞慢性记录来检查这个问题。这些研究将使我们能够准确评估运动输出和前神经活动之间的关系。如果在鸣鸟和鹦鹉中不明显类似的编码策略，它表明，即使在鸟类中，学习的发声前表示也不受到高度限制。另外，如果保留了编码策略，它将刺激对其他声音学习物种的进一步研究，以便为将来的Cladistic分析设置比较数据集，以更广泛地为学习的声音编码策略。