Brain development is a remarkable process that entails a number of successive yet overlapping events such as neurogenesis, neuronal migration, morphological maturation and cell integration in a functional network of other developing cells. In particular, the extracellular milieu of a specific developing brain cell is characterized by the presence of other cells that are developing themselves (cellular environment) and possibly influence each others through the action of different extracellular factors. This implies that what may be relevant for a specific developmental process at a given time in a particular brain area may not be significant at another time or place due to different cellular environments. Finally, this has tremendous conceptual consequences for the treatment of neurodevelopmental disorders, as the study of the different cellular environments during brain development may eventually lead to individuating specific therapeutic windows to address aberrant neuronal development with much reduced side effects. To address the above issues, we have developed two main lines of research in the laboratory: a first line focuses on basic and translational animal research in brain development, and a second one focuses on promoting new technological approaches in developmental neuroscience.