Abstract
Neurodevelopment The brain neocortex is built by waves of neurons migrating from deep within the brain to the surface layers. Ohtaka-Maruyama et al. found that a layer of neurons that multipolar neurons encounter on their travels instructs the migrating neurons to change phenotype and direction (see the Perspective by Schinder and Lanuza). These subplate neurons form transient glutamatergic synapses with the immature migrants. This results in the migrating multipolar neurons becoming bipolar, more directed, and faster in their final migrations. Science , this issue p. [313][1]; see also p. [265][2] [1]: /lookup/doi/10.1126/science.aar2866 [2]: /lookup/doi/10.1126/science.aat4587
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