IdealPhotonics' fiber optic photometry overview describes a technique that uses implanted fiber-coupled laser excitation and fluorescence collection to monitor the dynamics of neurotransmitters or calcium ions in specific brain regions of live animals in real time. Combined with gene-encoded fluorescent probes (such as GCaMP and dLight), it achieves high spatiotemporal resolution optical recording of neural activity.Key parameters include excitation/emission wavelength matching (e.g., 470/520 nm), detection sensitivity (ΔF/F > 10%), temporal resolution (ms-level), fiber numerical aperture (NA > 0.4), and motion artifact suppression capability. These parameters collectively determine the signal-to-noise ratio and behavioral correlation reliability of neural signal acquisition.