Nanotechnology-enabled neuromodulation is a promising minimally-invasive instrument in neuroscience and engineering for each elementary research and scientific functions. Nevertheless, the nano–neuro interplay at totally different phases of maturation of a neural community and its implications for the nano–neuromodulation stay unclear. Right here, we report heterogeneous to homogeneous transformation of neuromodulation in a progressively maturing neural community. Using plasmonic-fluors as ultrabright fluorescent nanolabels, we reveal that adverse floor cost of nanoparticles renders selective nano–neuro interplay with a robust correlation between the maturation stage of the person neurons within the neural community and the density of the nanoparticles certain on the neurons. In stark distinction to homogeneous neuromodulation in a mature neural community reported to date, the maturation-dependent density of the nanoparticles certain to neurons in a creating neural community resulted in a heterogeneous optical neuromodulation (i.e., simultaneous excitation and inhibition of neural community exercise). This research advances our understanding of nano–neuro interactions and nano–neuromodulation with potential functions in minimally-invasive applied sciences for treating neuronal issues in components of the mammalian mind the place neurogenesis persists all through getting older.