A computational model for vocal exchange dynamics and their development in marmoset monkeys
A computational model for vocal exchange dynamics and their development in marmoset monkeys
复制标题
狨猴声音交换动力学及其发展的计算模型
DOI：
10.1109/devlrn.2012.6400844
复制
发表时间：
2012
期刊：
影响因子：
--
通讯作者：
A. Ghazanfar
中科院分区：
文献类型：
--
作者：
D. Takahashi;Darshana Narayanan;A. Ghazanfar
How vocal turn-taking evolved, how it develops within individuals, and how it is mediated by neural circuits are open questions. We constructed a computational model of marmoset monkey vocal production to make predictions about the mechanisms underlying vocal exchanges and their development. The model is based on the interactions among three neural structures (`drive', `motor', and `auditory') with feedback connectivity inspired by published physiological and anatomical data. We fitted our model to the temporal dynamics of spontaneous vocalizations produced by isolated marmosets. We then tested the model for its ability to predict the structure of vocal exchanges between two marmosets. Our results demonstrate that the interaction between two of these three-node models result in turn-taking behavior that is nearly identical to that seen in natural adult marmoset vocal exchanges. We simulated the development of the auditory node by gradual strengthening its connection with the motor node. This generated the prediction that, during turn-taking development, the maturation of this connection will lead to decreases in overlapping vocalizations and increases in alternating exchanges.
