Results 21 to 30 of about 377,173 (291)

FocusStack and StimServer: a new open source MATLAB toolchain for visual stimulation and analysis of two-photon calcium neuronal imaging data [PDF]

open access: yes, 2014
Two-photon calcium imaging of neuronal responses is an increasingly accessible technology for probing population responses in cortex at single cell resolution, and with reasonable and improving temporal resolution. However, analysis of two-photon data is
Kampa, Björn M., Muir, Dylan R.
core   +2 more sources

Microglia protect against brain injury and their selective elimination dysregulates neuronal network activity after stroke

open access: yesNature Communications, 2016
How microglia contribute to brain injury or repair is unclear. Here combining microglia manipulations and calcium imaging, the authors show that selective elimination of microglia leads to disrupted neuronal calcium dynamics and markedly increased brain ...
Gergely Szalay   +11 more
doaj   +1 more source

Multimodal Characterization of Seizures in Zebrafish Larvae

open access: yesBiomedicines, 2022
Epilepsy accounts for a significant proportion of the world’s disease burden. Indeed, many research efforts are produced both to investigate the basic mechanism ruling its genesis and to find more effective therapies.
Lapo Turrini   +6 more
doaj   +1 more source

Two-photon imaging and quantum holography [PDF]

open access: yes, 2002
It has been claimed that ``the use of entangled photons in an imaging system can exhibit effects that cannot be mimicked by any other two-photon source, whatever strength of the correlations between the two photons'' [A. F. Abouraddy, B. E. A.
Abouraddy A F   +14 more
core   +2 more sources

Improving Focal Photostimulation of Cortical Neurons with Pre-derived Wavefront Correction

open access: yesFrontiers in Cellular Neuroscience, 2017
Recent progress in neuroscience to image and investigate brain function has been made possible by impressive developments in optogenetic and opto-molecular tools.
Vincent R. Daria   +6 more
doaj   +1 more source

Properties of pulsed entangled two-photon fields [PDF]

open access: yes, 1999
The dependence of one- and two-photon characteristics of pulsed entangled two-photon fields generated in spontaneous parametric down-conversion on the pump-pulse properties (shape of the pump-pulse spectrum and its internal structure) is examined.
Perina Jr, Jan
core   +2 more sources

Chemical Two-Photon Fluorescence

open access: yesAnalytical Chemistry, 2015
We describe a method based on a caged fluorescent molecule that can act as a chemical two-photon probe. It is composed of an organic fluorophore and a ruthenium-bipyridine complex that acts as a photoremovable quencher. For the fluorophore to be emissive, two independent photons must act on the molecule: the first photon frees the fluorescent ligand ...
Carrone, Guillermo Alejandro   +1 more
openaire   +3 more sources

Two-photon interference LiDAR imaging [PDF]

open access: yesOptics Express, 2022
Optical Coherence Tomography (OCT) is a key 3D imaging technology that provides micron scale depth resolution for bio-imaging. This resolution substantially surpasses what it typically achieved in Light Detection and Ranging (LiDAR) which is often limited to the millimetre scale due to the impulse response of the detection electronics.
Murray, Robbie, Lyons, Ashley
openaire   +3 more sources

A New Two-Photon Ratiometric Fluorescent Probe for Detecting Alkaline Phosphatase in Living Cells

open access: yesMolecules, 2016
Alkaline phosphatase (ALP) is an important diagnostic indicator of many human diseases. To quantitatively track ALP in biosystems, herein, for the first time, we report an efficient two-photon ratiometric fluorescent probe, termed probe 1 and based on ...
Xiaohong Zhou   +3 more
doaj   +1 more source

Enhanced two-photon emission from a dressed biexciton [PDF]

open access: yes, 2015
Radiative two-photon cascades from biexcitons in semiconductor quantum dots under resonant two-photon excitation are promising candidates for the generation of photon pairs.
del Valle, Elena   +3 more
core   +2 more sources

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