Results 111 to 120 of about 30,052 (310)

Tau Pathology in Alzheimer's Disease Uniquely Affects Sulcal Depths

Annals of Neurology, EarlyView.
Objective Though it is widely known that tau deposition affects brain structure, the precise localization of these effects is poorly understood, especially in relation to gyral and sulcal anatomy. We investigated whether tau pathology in Alzheimer's disease (AD) preferentially affects sulci, and particularly sulcal depths.
Samira A. Maboudian, Corrina S. Fonseca, Adam C. Martersteck, Yishu Chao, Yuheng Chen, Daniela Ushizima, Duygu Tosun, Lea T. Grinberg, Kevin S. Weiner, William J. Jagust, for the Alzheimer's Disease Neuroimaging Initiative   +10 more
wiley   +1 more source

Correlation of velocity and susceptibility in patients with aneurysmal subarachnoid hemorrhage [PDF]

, 2017
In many cerebral grey matter structures including the neocortex, spreading depolarization (SD) is the principal mechanism of the near-complete breakdown of the transcellular ion gradients with abrupt water influx into neurons.
Dahlem, Markus, Dreier, Jens P., Friedman, Alon, Grozea, Cristian, Hartings, Jed A., Kola, Vasilis, Lublinsky, Svetlana, Lückl, Janos, Major, Sebastian, Martus, Peter, Milakara, Denny, Scheel, Michael, Schoknecht, Karl, Winkler, Maren K. L., Woitzik, Johannes   +14 more
core   +1 more source

Helmeted hornbill cranial kinesis: Balancing mobility and stability in a high‐impact joint

The Anatomical Record, EarlyView.
Abstract Prokinesis—in which a craniofacial joint allows the rostrum to move relative to the braincase—is thought to confer diverse advantages in birds, mostly for feeding. A craniofacial joint would, however, be a weak link if cranial stability is important. Paradoxically, we have identified a craniofacial joint in helmeted hornbills (Rhinoplax vigil),
Mike Schindler, Benjamin Flaum, Armita Razieh Manafzadeh, Viktoriia Kamska, Kanmani Chandra Rajan, Maria Jose Robles Malagamba, Ruien Hu, Daniel Baum, Mason N. Dean   +8 more
wiley   +1 more source

Aura and osmophobia are associated with the IL1A -889C > T (rs1800587) variant in migraine

Arquivos de Neuro-Psiquiatria
Background Migraine belongs to the group of primary headaches, affecting 14.4% of the global population. The pathophysiological mechanisms of migraine involve the interplay between hypothalamic activation, cortical spreading depression ...
Amanda Brant Rocha, Giovana Ortiz Zendrini, Maria Paula Bertoletti Juliani, Regina Célia Poli Frederico, Valéria Aparecida Bello, Carlos Eduardo Coral de Oliveira, Edna Maria Vissoci Reiche, Aline Vitali-Silva   +7 more
doaj   +1 more source

Functional models from limited data: A parametric and multimodal approach to anatomy and 3D kinematics of feeding in basking sharks (Cetorhinus maximus)

The Anatomical Record, EarlyView.
Abstract Basking sharks, Cetorhinus maximus (Gunnerus, Brugden [Squalus maximus], Det Kongelige Norske Videnskabers Selskabs Skrifter, 1765, vol. 3, pp. 33–49), feed by gaping their mouths and gill slits, greatly reorienting their cranial skeletons to filter food from water.
Tairan Li, Mike Schindler, Martha Paskin, Venkata A. Surapaneni, Elliott Scott, Sabine Hauert, Nicholas Payne, David E. Cade, Jeremy A. Goldbogen, Frederik H. Mollen, Daniel Baum, Sean Hanna, Mason N. Dean   +12 more
wiley   +1 more source

An elastic segment of the whisker shaft enables coding of the whisking phase via whisker torsion in rats and mice

The Anatomical Record, EarlyView.
An elastic segment was found in the basal part of the whisker shaft in rats and mice. Application of force to the whisker bulb of isolated follicles caused bending and twisting of this segment. Active whisker movements deform this segment, causing whisker shaft deflection and selective activation of mechanoreceptors at different phases of whisking ...
Sebastian Haidarliu, Guy Nelinger, Luka Gantar, Ehud Ahissar, Inbar Saraf‐Sinik   +4 more
wiley   +1 more source

An unusual titanosaur axis from the Upper Cretaceous of Brazil and its significance for sauropod anatomy and systematics

The Anatomical Record, EarlyView.
Abstract The Upper Cretaceous São José do Rio Preto Formation (Bauru Group, southeastern Brazil) has yielded a fragmentary but taxonomically diverse record of titanosaur sauropods, although elements from cervical series remain scarce. Here, we describe a nearly complete sauropod axis from the Vila Ventura Paleontological Area, representing an uncommon ...
Bruno A. Navarro, Jeffrey A. Wilson Mantilla, Jhonata H. A. Martins, Fabiano V. Iori, Leonardo S. Paschoa, Alberto B. Carvalho, Joseli M. Piranha, Hussam Zaher   +7 more
wiley   +1 more source

Depolarization increases cellular light transmission [PDF]

, 2008
Application of optical methods to human brain tissue in vivo, e.g., measuring oxyhemoglobin and deoxyhemoglobin concentration changes with near-infrared spectroscopy (NIRS), requires the a priori assumption that background optical properties remain ...
Haruki Toriumi, Jemal Tatarishvili, Minoru Tomita, Miyuki Unekawa, Norihiro Suzuki, Takashi Osada, Yutaka Tomita   +6 more
core   +1 more source

Analyzing critical propagation in a reaction-diffusion-advection model using unstable slow waves

, 2014
The effect of advection on the critical minimal speed of traveling waves is studied. Previous theoretical studies estimated the effect on the velocity of stable fast waves and predicted the existence of a critical advection strength below which ...
Dahlem, Markus A., Kneer, Frederike, Obermayer, Klaus   +2 more
core   +1 more source

Retrograde amnesia due to spreading cortical depression: Paradoxical effect of shock-SD interval [PDF]

, 1966
Ronald G. Rabedeau
openalex   +1 more source