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… With programmable pixels, novel sensor improves imaging of neural activity June 7, 2024 Research Findings New … ratio when tracking real-time visual indicator of neural voltage voltage imaging In vivo cellular imaging …

… resulting electrical responses (“genetically engineered voltage indicators”). Key to these advances has been cleverly …

… occur as “electrographic seizures” which are bursts of voltage among neurons across a broad spectrum of frequencies. …

… to drive the neural activity, or the fluctuations of voltage apparent across the cells’ membranes. If the neurons … this prevailing electric field influences the membrane voltage of constituent neurons is called “ephaptic …

… and pyramidal neurons to express a genetically encoded voltage indicator (red). Image is a detail of a figure from … of the CCK cells. Then, using a genetically encoded voltage indicator, a protein that glows to quickly and … indicate electrical activity, they watched the membrane voltage of connected pyramid-shaped, or “pyramidal,” cells. …

… is an especially effective blocker. Blocking slows the voltage build-up across the neuron’s membrane that eventually … other neurons. The NMDA doorway becomes unblocked when the voltage gets high. This interdependence between voltage, spiking and blocking can equip NMDA receptors with …

… change to encode memories of specific locations. voltage imaging all-optical physiology place cells hippocampus … that technique alongside the use of a genetically encoded voltage indicator (GEVI) that glows based on the level of a …

… measurements. Those measures track the rapid voltage changes, or spikes, that neurons exhibit as they … quickly the waveform ranges between its lowest and highest voltage (“trough to peak duration”), and how quickly the voltage changes again afterward, returning from the peak to …

… chemist who was working to develop “genetically encoded voltage indicators.” GEVIs genetically engineer neurons to … indicates the cells’ most subtle changes in membrane voltage. The technology is ideal for genetically targeting …