Quantitative experiments and analysis determine the limit of excitation power of 1300-nm three-photon microscopy, and the imaging depth where three-photon outperforms two-photon for calcium imaging in the mouse brain.
A combination of optogenetics and 2-photon calcium imaging reveals spatial prerequisites for non-linear synaptic summation within a defined cortical connection.
Amy M LeMessurier, Keven J Laboy-Juárez ... Daniel E Feldman
Sensory enrichment creates a more columnar, less salt-and-pepper whisker map in somatosensory cortex, showing that impoverished experience contributes to intermixed tuning in rodent sensory maps.
Establishment of two-photon imaging with a 1100-nm laser, which underfills the objective's back aperture, detects activity of multiple neurons in the prelimbic area and hippocampal CA1 region of the intact mouse brain.
Development of imaging methods to capture neural activity and structure through the intact cuticle using 2-photon and 3-photon excitation in the genetic model organism, Drosophila melanogaster.
Quentin Gaucher, Mariangela Panniello ... Kerry MM Walker
The A1 of ferrets and mice show similar tonotopic organizations, with neurons preferring a single frequency being more precisely organized into a tonotopic map than multipeaked neurons.
Heterogeneity in cytoplasmic calcium concentration alongside B cell activation and differentiation is measured intravitally using an interdisciplinary imaging approach and novel numerical analysis.
Procedures were developed to perform mesoscale 2-photon Ca2+ imaging simultaneously from all of mouse dorsolateral neocortex, facilitating identification of widespread neural ensembles with activity related to diverse aspects of behavior.
An all-optical 3D two-photon imaging and photostimulation platform was demonstrated, with the capability to precisely stimulate a large group of cells in mice cortex in vivo with low laser power.