[HTML][HTML] Flexible simultaneous mesoscale two-photon imaging of neural activity at high speeds

M Clough, IA Chen, SW Park, AM Ahrens… - Nature …, 2021 - nature.com
Understanding brain function requires monitoring local and global brain dynamics. Two-photon
imaging of the brain across mesoscopic scales has presented trade-offs between …

High-speed low-light in vivo two-photon voltage imaging of large neuronal populations

…, IA Chen, IG Davison, L Tian, VA Pieribone, JL Chen - Nature …, 2023 - nature.com
Monitoring spiking activity across large neuronal populations at behaviorally relevant
timescales is critical for understanding neural circuit function. Unlike calcium imaging, voltage …

[HTML][HTML] Scalable mapping of myelin and neuron density in the human brain with micrometer resolution

S Chang, D Varadarajan, J Yang, IA Chen, S Kura… - Scientific Reports, 2022 - nature.com
Optical coherence tomography (OCT) is an emerging 3D imaging technique that allows
quantification of intrinsic optical properties such as scattering coefficient and back-scattering …

A cellular resolution atlas of Broca's area

…, S Raia, M Varghese, B Wicinski, S Chang, IA Chen… - Science …, 2023 - science.org
Brain cells are arranged in laminar, nuclear, or columnar structures, spanning a range of
scales. Here, we construct a reliable cell census in the frontal lobe of human cerebral cortex at …

Awake chronic mouse model of targeted pial vessel occlusion via photothrombosis

…, D Postnov, J Tang, S Kura, X Cheng, IA Chen… - …, 2020 - spiedigitallibrary.org
Animal models of stroke are used extensively to study the mechanisms involved in the acute
and chronic phases of recovery following stroke. A translatable animal model that closely …

Volumetric characterization of microvasculature in ex vivo human brain samples by serial sectioning optical coherence tomography

J Yang, S Chang, IA Chen, S Kura… - IEEE Transactions …, 2022 - ieeexplore.ieee.org
Objective: Serial sectioning optical coherence tomography (OCT) enables accurate volumetric
reconstruction of several cubic centimeters of human brain samples. We aimed to identify …

[HTML][HTML] Baseline oxygen consumption decreases with cortical depth

…, K Kılıç, LN Amra, EA Martin, IA Chen… - PLoS …, 2022 - journals.plos.org
The cerebral cortex is organized in cortical layers that differ in their cellular density,
composition, and wiring. Cortical laminar architecture is also readily revealed by staining for …

Ultra-broadband wavelength conversion sensor using thermochromic liquid crystals

IA Chen, SW Park, G Chen, C Wang… - … , RF, Millimeter, and …, 2013 - spiedigitallibrary.org
Wavelength conversion (WC) imaging is a methodology that employs temperature sensitive
detectors to convert photoinduced termperature into a detectable optical signal. One specific …

Improving the characterization of ex vivo human brain optical properties using high numerical aperture optical coherence tomography by spatially constraining the …

J Yang, IA Chen, S Chang, J Tang, B Lee… - …, 2020 - spiedigitallibrary.org
Significance: The optical properties of biological samples provide information about the
structural characteristics of the tissue and any changes arising from pathological conditions. …

Multi‐Scale Label‐Free Human Brain Imaging with Integrated Serial Sectioning Polarization Sensitive Optical Coherence Tomography and Two‐Photon Microscopy

…, M Hyman, X Fu, C Li, SC Chen… - Advanced …, 2023 - Wiley Online Library
The study of aging and neurodegenerative processes in the human brain requires a
comprehensive understanding of cytoarchitectonic, myeloarchitectonic, and vascular structures. …