Results 191 to 200 of about 2,634,872 (277)

Retrospective Grid Cells in the Medial Entorhinal Cortex Encode Past Paths During Spatial Navigation

Advanced Science, EarlyView.
Retrospective grid cells are identified in the medial entorhinal cortex, with spatial firing patterns that become most grid‐like when activity is projected onto recently traversed locations. Their coding loses spatial precision in darkness and is disrupted during assisted movement, indicating that entorhinal representations incorporate recent path ...
Ruojin Liu, Xin Yuan, Zilong He, Hong Jin, Jiayi Tian, Cong Chen, Yuanjing Liu, Xiang Zhang, Shidan Wen, Emilio Kropff, Chenglin Miao   +10 more
wiley   +1 more source

Investigating the Use of Traveltime and Reflection Tomography for Deep Learning-Based Sound-Speed Estimation in Ultrasound Computed Tomography. [PDF]

IEEE Trans Ultrason Ferroelectr Freq Control
Jeong G, Li F, Mitcham TM, Villa U, Duric N, Anastasio MA.   +5 more
europepmc   +1 more source

Determining the Out-of-Plane Longitudinal Sound Speed in GeS by Broadband Time-Domain Brillouin Scattering. [PDF]

ACS Omega
Al-Basheer W, Viernes C, Cheng M, Zheng R, Netzke S, Pichugin K, Sciaini G.   +6 more
europepmc   +1 more source

Feature coupling photoacoustic computed tomography for joint reconstruction of initial pressure and sound speed in vivo. [PDF]

Biomed Opt Express, 2019
Cai C, Wang X, Si K, Qian J, Luo J, Ma C.   +5 more
europepmc   +1 more source

Sea Cucumber‐Inspired Double‐Network Biopolymer Hydrogels for Programmable Soft Machines

Advanced Science, EarlyView.
Inspired by the mutable dermis of sea cucumbers, the collagen‐alginate double‐network elastomeric (CoDE) hydrogel achieves programmable, recoverable, and functional mechanical behavior. The CoDE hydrogel mimics the mutable stiffness of the sea cucumber dermis through a densified collagen cryogel scaffold that is secondarily reinforced by a dissipative,
Luo Yan, He Xiao, Purohit Prashant K., Vining Kyle H.   +3 more
wiley   +1 more source

2-D Slicewise Waveform Inversion of Sound Speed and Acoustic Attenuation for Ring Array Ultrasound Tomography Based on a Block LU Solver. [PDF]

IEEE Trans Med Imaging
Ali R, Mitcham TM, Brevett T, Agudo OC, Martinez CD, Li C, Doyley MM, Duric N.   +7 more
europepmc   +1 more source

Sound speed, attenuation, and reflection in gassy sediments. [PDF]

J Acoust Soc Am, 2017
Zheng G, Huang Y, Hua J.
europepmc   +1 more source

Freestanding PZT Films for Integrated Wearable Sensing and Intelligent Acoustic Recognition

Advanced Science, EarlyView.
A freestanding epitaxial PZT/LaNiO3/Pt heterostructure is achieved via water‐assisted delamination from mica, effectively eliminating substrate‐induced clamping and releasing intrinsic ferroelectricity. The released film exhibits substantially enhanced remanent polarization and piezoelectric response, delivering excellent mechanical flexibility and ...
Hailong Pan, Zhichao Xu, Rongxiao Liu, Jianmei Pei, Changhong Yang, Shifeng Huang, Michael Wübbenhorst   +6 more
wiley   +1 more source

Parameterized joint reconstruction of the initial pressure and sound speed distributions for photoacoustic computed tomography. [PDF]

SIAM J Imaging Sci, 2018
Matthews TP, Poudel J, Li L, Wang LV, Anastasio MA.   +4 more
europepmc   +1 more source

Mode‐Resolved Phonon Dynamics Under Chemical Pressure in SnTe Thermoelectrics

Advanced Science, EarlyView.
Chemical pressure reshapes low‐energy optical phonons in SnTe, altering their dispersion and scattering with heat‐carrying acoustic modes. Positive and negative pressure states modify phonon frequencies and lifetimes in distinct ways, revealing how mode‐selective lattice perturbations regulate acoustic–optical interactions and suppress lattice thermal ...
Zhihao Li, Jianhong Hu, Panpan Peng, Peng Cao, Hui Zhang, Yujie Zong, Yanhui Wu, Hongchao Wang   +7 more
wiley   +1 more source