Topic: tree shrew

A characteristic feature of developing sensory circuits is spontaneous co-activations that initiate organized networks and maps in preparation for sensory experience. In species such as primates and carnivores, the mature visual cortex is characterized by iterated clusters of similarly responding neurons, or modules, and provides an excellent model system for exploring the mechanisms underlying the development of functional network organization. The sequence of early events that leads to the initial emergence of modular network structure remains unknown. Interestingly during this period of ear

The transition from externally to internally focused attention is accompanied by the coactivation of a group of brain regions collectively known as the default mode network (DMN). While the DMN was initially considered as a cortical network, recent results have provided evidence that some subcortical structures are also involved in DMN regulation. Here we investigated the subcortical nodes, ventral pallidum (VP) and mediodorsal thalamus (MD), in DMN regulation in the tree shrew, a diurnal mammal that is a close relative of primates. We use wireless multichannel recordings and motion tracking,