Balanoff Amy M
Center for Functional Anatomy and Evolution, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Biol Lett. 2024 Dec;20(12):20240472. doi: 10.1098/rsbl.2024.0472. Epub 2024 Dec 18.
Our fascination with dinosaur brains and their capabilities essentially began with the first dinosaur discovery. The history of this study is a useful reflection of palaeoneurology as a whole and its relationship to a more inclusive evolutionary neuroscience. I argue that this relationship is imbued with high heuristic potential, but one whose realization requires overcoming certain constraints. These constraints include the need for a stable phylogenetic framework, methods for efficient and precise endocast construction, and fossil researchers who are steeped in a neuroscience perspective. The progress that has already been made in these areas sets the stage for a more mature palaeoneurology-not only one capable of being informed by neuroscience discoveries but one that drives such discoveries. I draw from work on the size, shape, behavioural correlates and developmental role of the dinosaur brain to outline current advances in dinosaur palaeoneurology. My examples largely are taken from theropods and centre on questions related to the origin of birds and their unique locomotory capabilities. The hope, however, is that these exemplify the potential for study in other dinosaur groups, and for utilizing the dinosaur-bird lineage as a parallel model on a par with mammals for studying encephalization.
我们对恐龙大脑及其能力的着迷本质上始于首次发现恐龙。这项研究的历史很好地反映了古神经学的整体情况及其与更广泛的进化神经科学的关系。我认为这种关系具有很高的启发潜力,但要实现这一点需要克服某些限制。这些限制包括需要一个稳定的系统发育框架、高效精确的脑颅模型构建方法,以及熟悉神经科学观点的化石研究人员。这些领域已经取得的进展为更成熟的古神经学奠定了基础——不仅是能够借鉴神经科学发现的古神经学,更是能够推动此类发现的古神经学。我借鉴了关于恐龙大脑的大小、形状、行为相关性和发育作用的研究成果,来概述恐龙古神经学的当前进展。我的例子主要取自兽脚亚目恐龙,并围绕与鸟类起源及其独特运动能力相关的问题展开。然而,希望这些例子能够体现出在其他恐龙群体中进行研究的潜力,以及将恐龙 - 鸟类谱系作为与哺乳动物同等的平行模型来研究脑化的潜力。