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A sync state in the midbrain dopamine network for interoceptive nutrient learning 07/22/2026

Yang et al. show that a subpopulation of VTA dopamine neurons enters a distinct low-frequency synchronous state during novel food consumption. Emerging during oral-gastric overlap, this state mediates interoceptive credit assignment by linking delayed nutrient signals to immediate tastes. Disrupting this impairs value updating, whereas synchrony-mimicking stimulation enhances future consumption.

Neurexin-1γ drives synaptic transmission through structural integration of neurotransmitter release machinery and postsynaptic receptor nanodomains 07/21/2026

Padmanabhan et al. identify neurexin1-γ as a presynaptic organizer that anchors a vesicle-priming subassembly to the active zone and physically bridges release machinery to AMPAR nanodomains through its heparan sulfate modification. Neurexin1-γ loss disrupts synaptic nanoarchitecture, causing deficits in excitatory and inhibitory synaptic transmission, synaptic plasticity, and cognitive function.

Neural traveling waves in cortex: Network mechanisms and potential roles in neural computation 07/21/2026

Muller et al. review how spiking and synaptic activity are often organized as traveling waves in single cortical areas that modulate excitability, perception, and behavior. Specific features of these waves support spatiotemporal, dynamics-based computations, such as short-term prediction and generative processing.

Senescent cell heterogeneity in brain aging and neurodegenerative disease 07/21/2026

This review by Graves et al. synthesizes emerging evidence that senescent brain cells are heterogeneous, dynamic, and context dependent, highlighting determinants of diverse programs and emphasizing integration of single-cell- and spatial-omics with mouse studies to facilitate mechanistic insights and possible therapeutics.