Results 121 to 130 of about 12,040,588 (301)

Logarithmic distributions prove that intrinsic learning is Hebbian

, 2017
In this paper, we present data for the lognormal distributions of spike rates, synaptic weights and intrinsic excitability (gain) for neurons in various brain areas, such as auditory or visual cortex, hippocampus, cerebellum, striatum, midbrain nuclei ...
Scheler, Gabriele
core   +2 more sources

Human brain matters: Navigating the neuropathology of COVID‐19

Brain Pathology, EarlyView.
Severe COVID‐19 is associated with vascular dysregulation and chronic neuroinflammation, leading to axonal injury and neurodegeneration. In long COVID or PASC, persistent alterations in neuroimaging and biofluid biomarkers reflect ongoing neuronal damage and neuroinflammation, contributing to long‐term neurological symptoms including fatigue, cognitive
Juliana M. Nieuwland, Angelica Scaramuzza, Marianna Bugiani, Wilma D. J. van de Berg, Jinte Middeldorp   +4 more
wiley   +1 more source

Wasteosomes accumulate in periventricular white matter hyperintensities and exhibit complex relationships with mixed pathology, sclerotic index, and perivascular space

Brain Pathology, EarlyView.
In a mixed diagnostic cohort of pathologically diagnosed Alzheimer's disease, cerebrovascular disease, mixed pathology, and control tissue, we connected the histopathological wasteosome profile in periventricular (PV) brain sections to 7T FLAIR‐MRI confirmed PV white matter hyperintensities (WMHs), vascular stenosis and perivascular space size ...
Nikita Ollen‐Bittle, Isabella Boesgaard, Austyn Roseborough, Meaghan Frank, Qi Zhang, Stephen H. Pasternak, Robert Hammond, Shawn N. Whitehead   +7 more
wiley   +1 more source

The endocytic adaptor AP-2 maintains Purkinje cell function by balancing cerebellar parallel and climbing fiber synapses

Cell Reports
Summary: The loss of cerebellar Purkinje cells is a hallmark of neurodegenerative movement disorders, but the mechanisms remain enigmatic. We show that endocytic adaptor protein complex 2 (AP-2) is crucial for Purkinje cell survival. Using mouse genetics,
Marianna Tolve, Janine Tutas, Ebru Özer-Yildiz, Ines Klein, Anne Petzold, Veronika J. Fritz, Melina Overhoff, Quinn Silverman, Ellie Koletsou, Filip Liebsch, Guenter Schwarz, Tatiana Korotkova, Silvana Valtcheva, Graziana Gatto, Natalia L. Kononenko   +14 more
doaj   +1 more source

Biosynthesis, mode of action and functional significance of neurosteroids in the Purkinje cell

Frontiers in Endocrinology, 2011
The brain has traditionally been considered to be a target site of peripheral steroid hormones. In addition to this classical concept, we now know that the brain has the capacity to synthesize steroids de novo from cholesterol, the so-called ...
Kazuyoshi eTsutsui, Kazuyoshi eUkena, Hirotaka eSakamoto, Shin-ichiro eOkuyama, Shogo eHaraguchi   +4 more
doaj   +1 more source

Cerebellar Learning in an Opponent Motor Controller for Adaptive Load Compensation and Synergy Formation [PDF]

, 1993
This paper shows how a minimal neural network model of the cerebellum may be embedded within a sensory-neuro-muscular control system that mimics known anatomy and physiology.
Bullock, Daniel, Contreras-Vidal, Jose L., Grossberg, Stephen   +2 more
core   +1 more source

Reduced Purkinje cell number in essential tremor : a postmortem study [PDF]

, 2008
Background: Clinical and functional imaging evidence suggests that cerebellar dysfunction occurs in essential tremor (ET). In recent postmortem studies, we documented increased numbers of torpedoes (Purkinje cell axonal swellings) in ET patients without ...
Axelrad, Jordan E., Faust, Phyllis L., Flores, Ingrid C., Honig, Lawrence S., Louis, Elan D., Lyons, Kelly E., Pahwa, Rajesh, Ross, G. Webster, Vonsattel, Jean Paul   +8 more
core   +2 more sources

Variable electrophysiology before and after block of the two delayed rectifier potassium channels in groups of isolated rabbit ventricular cells

British Journal of Pharmacology, EarlyView.
Abstract Background and Purpose Between‐cell differences in ventricular cardiomyocyte action potential duration (APD) and responses to ion channel block may contribute to pro‐arrhythmic dispersion of myocardial repolarisation. This study quantifies between‐cell physiological and pharmacological variability in the rabbit left ventricle (LV) and uses ...
Rebecca J. Gilchrist, Muhamad Hifzhudin Noor Aziz, Francis L. Burton, Radostin D. Simitev, Rachel C. Myles, Godfrey L. Smith   +5 more
wiley   +1 more source

Profound morphological and functional changes of rodent Purkinje cellsbetween the first and the second postnatal weeks: a metamorphosis?

Frontiers in Neuroanatomy, 2012
Between the first and the second postnatal week, the development of rodent Purkinje cells is characterized by several profound transitions. Purkinje cells acquire their typical dendritic espalier tree morphology and form distal spines.
Isabelle eDusart, Frédéric eFLAMANT
doaj   +1 more source

Next‐Generation Strategies for Neural Repair and Regeneration: Neural Organoid Transplantation in the CNS

Cell Proliferation, EarlyView.
Neurological disorders are hard to treat. Stem cell‐derived neural organoids enable research, and their transplantation aids CNS therapy, with this article reviewing relevant advances, challenges and prospects. ABSTRACT Neurological disorders are often devastating and notoriously difficult to repair, creating an urgent need for novel research models ...
Yutong Wang, Jinrui Li, Xingjia Mao, Wanyu Wang, Yansong Li, Xuefei Hu, Jinjie Zhong, Fengdong Zhao, Linlin Wang   +8 more
wiley   +1 more source